Commit | Line | Data |
---|---|---|
5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
b2a8e766 AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004 |
3 | Free Software Foundation, Inc. | |
5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
5 | based on elf32-ppc.c by Ian Lance Taylor. | |
d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
5bd4f169 | 7 | |
ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
5bd4f169 | 9 | |
ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
5bd4f169 | 14 | |
ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
5bd4f169 | 19 | |
4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
21 | with this program; if not, write to the Free Software Foundation, Inc., | |
22 | 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
5bd4f169 | 23 | |
4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
5bd4f169 AM |
27 | |
28 | #include "bfd.h" | |
29 | #include "sysdep.h" | |
30 | #include "bfdlink.h" | |
31 | #include "libbfd.h" | |
32 | #include "elf-bfd.h" | |
04c9666a | 33 | #include "elf/ppc64.h" |
5d1634d7 | 34 | #include "elf64-ppc.h" |
5bd4f169 | 35 | |
805fc799 | 36 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
4ce794b7 | 37 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
38 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
805fc799 | 40 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
4ce794b7 | 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
2441e016 AM |
54 | static bfd_vma opd_entry_value |
55 | (asection *, bfd_vma, asection **, bfd_vma *); | |
5bd4f169 | 56 | |
ad8e1ba5 AM |
57 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
58 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
59 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
60 | #define TARGET_BIG_NAME "elf64-powerpc" | |
61 | #define ELF_ARCH bfd_arch_powerpc | |
62 | #define ELF_MACHINE_CODE EM_PPC64 | |
63 | #define ELF_MAXPAGESIZE 0x10000 | |
64 | #define elf_info_to_howto ppc64_elf_info_to_howto | |
65 | ||
66 | #define elf_backend_want_got_sym 0 | |
67 | #define elf_backend_want_plt_sym 0 | |
68 | #define elf_backend_plt_alignment 3 | |
69 | #define elf_backend_plt_not_loaded 1 | |
70 | #define elf_backend_got_symbol_offset 0 | |
71 | #define elf_backend_got_header_size 8 | |
ad8e1ba5 AM |
72 | #define elf_backend_can_gc_sections 1 |
73 | #define elf_backend_can_refcount 1 | |
74 | #define elf_backend_rela_normal 1 | |
75 | ||
e717da7e | 76 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
ad8e1ba5 AM |
77 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
78 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data | |
79 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
80 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
81 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
90e3cdf2 | 82 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
ad8e1ba5 AM |
83 | |
84 | #define elf_backend_object_p ppc64_elf_object_p | |
d37c89e5 AM |
85 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
86 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
ad8e1ba5 AM |
87 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
88 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
555cd476 | 89 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
8387904d AM |
90 | #define elf_backend_check_directives ppc64_elf_check_directives |
91 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup | |
ad8e1ba5 AM |
92 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
93 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook | |
94 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
95 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
96 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
97 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
98 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
99 | #define elf_backend_relocate_section ppc64_elf_relocate_section | |
100 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
101 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
102 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
754021d0 | 103 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
2f89ff8d | 104 | #define elf_backend_special_sections ppc64_elf_special_sections |
ad8e1ba5 | 105 | |
5bd4f169 AM |
106 | /* The name of the dynamic interpreter. This is put in the .interp |
107 | section. */ | |
108 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
109 | ||
110 | /* The size in bytes of an entry in the procedure linkage table. */ | |
111 | #define PLT_ENTRY_SIZE 24 | |
112 | ||
113 | /* The initial size of the plt reserved for the dynamic linker. */ | |
5d1634d7 | 114 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
5bd4f169 AM |
115 | |
116 | /* TOC base pointers offset from start of TOC. */ | |
411e1bfb AM |
117 | #define TOC_BASE_OFF 0x8000 |
118 | ||
119 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
120 | #define TP_OFFSET 0x7000 | |
121 | #define DTP_OFFSET 0x8000 | |
5bd4f169 | 122 | |
ad8e1ba5 AM |
123 | /* .plt call stub instructions. The normal stub is like this, but |
124 | sometimes the .plt entry crosses a 64k boundary and we need to | |
125 | insert an addis to adjust r12. */ | |
126 | #define PLT_CALL_STUB_SIZE (7*4) | |
5d1634d7 AM |
127 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
128 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
129 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
130 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ | |
131 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ | |
132 | /* ld %r11,xxx+16@l(%r12) */ | |
133 | #define BCTR 0x4e800420 /* bctr */ | |
134 | ||
5d1634d7 | 135 | |
ad8e1ba5 AM |
136 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
137 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
138 | ||
139 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ | |
140 | ||
141 | /* glink call stub instructions. We enter with the index in R0, and the | |
142 | address of glink entry in CTR. From that, we can calculate PLT0. */ | |
143 | #define GLINK_CALL_STUB_SIZE (16*4) | |
144 | #define MFCTR_R12 0x7d8902a6 /* mfctr %r12 */ | |
145 | #define SLDI_R11_R0_3 0x780b1f24 /* sldi %r11,%r0,3 */ | |
146 | #define ADDIC_R2_R0_32K 0x34408000 /* addic. %r2,%r0,-32768 */ | |
147 | #define SUB_R12_R12_R11 0x7d8b6050 /* sub %r12,%r12,%r11 */ | |
148 | #define SRADI_R2_R2_63 0x7c42fe76 /* sradi %r2,%r2,63 */ | |
149 | #define SLDI_R11_R0_2 0x780b1764 /* sldi %r11,%r0,2 */ | |
150 | #define AND_R2_R2_R11 0x7c425838 /* and %r2,%r2,%r11 */ | |
151 | /* sub %r12,%r12,%r11 */ | |
152 | #define ADD_R12_R12_R2 0x7d8c1214 /* add %r12,%r12,%r2 */ | |
153 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ | |
154 | /* ld %r11,xxx@l(%r12) */ | |
155 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,xxx@l */ | |
156 | /* ld %r2,8(%r12) */ | |
157 | /* mtctr %r11 */ | |
158 | /* ld %r11,16(%r12) */ | |
159 | /* bctr */ | |
5d1634d7 AM |
160 | |
161 | /* Pad with this. */ | |
162 | #define NOP 0x60000000 | |
163 | ||
721956f4 AM |
164 | /* Some other nops. */ |
165 | #define CROR_151515 0x4def7b82 | |
166 | #define CROR_313131 0x4ffffb82 | |
167 | ||
cedb70c5 | 168 | /* .glink entries for the first 32k functions are two instructions. */ |
5d1634d7 AM |
169 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
170 | #define B_DOT 0x48000000 /* b . */ | |
171 | ||
172 | /* After that, we need two instructions to load the index, followed by | |
173 | a branch. */ | |
174 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
10ed1bba | 175 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
41bd81ab | 176 | |
82bd7b59 AM |
177 | /* Instructions to save and restore floating point regs. */ |
178 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ | |
179 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
180 | #define BLR 0x4e800020 /* blr */ | |
181 | ||
41bd81ab AM |
182 | /* Since .opd is an array of descriptors and each entry will end up |
183 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
184 | propagate .opd relocs; The dynamic linker should be taught to | |
1e2f5b6e | 185 | relocate .opd without reloc entries. */ |
41bd81ab AM |
186 | #ifndef NO_OPD_RELOCS |
187 | #define NO_OPD_RELOCS 0 | |
188 | #endif | |
5bd4f169 | 189 | \f |
f5e87a1d | 190 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
b34976b6 | 191 | |
5bd4f169 | 192 | /* Relocation HOWTO's. */ |
04c9666a | 193 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
5bd4f169 AM |
194 | |
195 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
196 | /* This reloc does nothing. */ | |
197 | HOWTO (R_PPC64_NONE, /* type */ | |
198 | 0, /* rightshift */ | |
411e1bfb AM |
199 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
200 | 32, /* bitsize */ | |
b34976b6 | 201 | FALSE, /* pc_relative */ |
5bd4f169 | 202 | 0, /* bitpos */ |
f5e87a1d | 203 | complain_overflow_dont, /* complain_on_overflow */ |
5bd4f169 AM |
204 | bfd_elf_generic_reloc, /* special_function */ |
205 | "R_PPC64_NONE", /* name */ | |
b34976b6 | 206 | FALSE, /* partial_inplace */ |
d006db6c | 207 | 0, /* src_mask */ |
5bd4f169 | 208 | 0, /* dst_mask */ |
b34976b6 | 209 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
210 | |
211 | /* A standard 32 bit relocation. */ | |
212 | HOWTO (R_PPC64_ADDR32, /* type */ | |
213 | 0, /* rightshift */ | |
214 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
215 | 32, /* bitsize */ | |
b34976b6 | 216 | FALSE, /* pc_relative */ |
5bd4f169 AM |
217 | 0, /* bitpos */ |
218 | complain_overflow_bitfield, /* complain_on_overflow */ | |
219 | bfd_elf_generic_reloc, /* special_function */ | |
220 | "R_PPC64_ADDR32", /* name */ | |
b34976b6 | 221 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
222 | 0, /* src_mask */ |
223 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 224 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
225 | |
226 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
227 | FIXME: we don't check that, we just clear them. */ | |
228 | HOWTO (R_PPC64_ADDR24, /* type */ | |
229 | 0, /* rightshift */ | |
230 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
231 | 26, /* bitsize */ | |
b34976b6 | 232 | FALSE, /* pc_relative */ |
5bd4f169 AM |
233 | 0, /* bitpos */ |
234 | complain_overflow_bitfield, /* complain_on_overflow */ | |
235 | bfd_elf_generic_reloc, /* special_function */ | |
236 | "R_PPC64_ADDR24", /* name */ | |
b34976b6 | 237 | FALSE, /* partial_inplace */ |
d006db6c | 238 | 0, /* src_mask */ |
f5e87a1d | 239 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 240 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
241 | |
242 | /* A standard 16 bit relocation. */ | |
243 | HOWTO (R_PPC64_ADDR16, /* type */ | |
244 | 0, /* rightshift */ | |
245 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
246 | 16, /* bitsize */ | |
b34976b6 | 247 | FALSE, /* pc_relative */ |
5bd4f169 AM |
248 | 0, /* bitpos */ |
249 | complain_overflow_bitfield, /* complain_on_overflow */ | |
250 | bfd_elf_generic_reloc, /* special_function */ | |
251 | "R_PPC64_ADDR16", /* name */ | |
b34976b6 | 252 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
253 | 0, /* src_mask */ |
254 | 0xffff, /* dst_mask */ | |
b34976b6 | 255 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
256 | |
257 | /* A 16 bit relocation without overflow. */ | |
258 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
259 | 0, /* rightshift */ | |
260 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
261 | 16, /* bitsize */ | |
b34976b6 | 262 | FALSE, /* pc_relative */ |
5bd4f169 AM |
263 | 0, /* bitpos */ |
264 | complain_overflow_dont,/* complain_on_overflow */ | |
265 | bfd_elf_generic_reloc, /* special_function */ | |
266 | "R_PPC64_ADDR16_LO", /* name */ | |
b34976b6 | 267 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
268 | 0, /* src_mask */ |
269 | 0xffff, /* dst_mask */ | |
b34976b6 | 270 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
271 | |
272 | /* Bits 16-31 of an address. */ | |
273 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
274 | 16, /* rightshift */ | |
275 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
276 | 16, /* bitsize */ | |
b34976b6 | 277 | FALSE, /* pc_relative */ |
5bd4f169 AM |
278 | 0, /* bitpos */ |
279 | complain_overflow_dont, /* complain_on_overflow */ | |
280 | bfd_elf_generic_reloc, /* special_function */ | |
281 | "R_PPC64_ADDR16_HI", /* name */ | |
b34976b6 | 282 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
283 | 0, /* src_mask */ |
284 | 0xffff, /* dst_mask */ | |
b34976b6 | 285 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
286 | |
287 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
288 | bits, treated as a signed number, is negative. */ | |
289 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
290 | 16, /* rightshift */ | |
291 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
292 | 16, /* bitsize */ | |
b34976b6 | 293 | FALSE, /* pc_relative */ |
5bd4f169 AM |
294 | 0, /* bitpos */ |
295 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 296 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 297 | "R_PPC64_ADDR16_HA", /* name */ |
b34976b6 | 298 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
299 | 0, /* src_mask */ |
300 | 0xffff, /* dst_mask */ | |
b34976b6 | 301 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
302 | |
303 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
304 | FIXME: we don't check that, we just clear them. */ | |
305 | HOWTO (R_PPC64_ADDR14, /* type */ | |
306 | 0, /* rightshift */ | |
307 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
308 | 16, /* bitsize */ | |
b34976b6 | 309 | FALSE, /* pc_relative */ |
5bd4f169 AM |
310 | 0, /* bitpos */ |
311 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2441e016 | 312 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 313 | "R_PPC64_ADDR14", /* name */ |
b34976b6 | 314 | FALSE, /* partial_inplace */ |
d006db6c | 315 | 0, /* src_mask */ |
f5e87a1d | 316 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 317 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
318 | |
319 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
320 | indicate that the branch is expected to be taken. The lower two | |
321 | bits must be zero. */ | |
322 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
323 | 0, /* rightshift */ | |
324 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
325 | 16, /* bitsize */ | |
b34976b6 | 326 | FALSE, /* pc_relative */ |
5bd4f169 AM |
327 | 0, /* bitpos */ |
328 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 329 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 330 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
b34976b6 | 331 | FALSE, /* partial_inplace */ |
d006db6c | 332 | 0, /* src_mask */ |
f5e87a1d | 333 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 334 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
335 | |
336 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
337 | indicate that the branch is not expected to be taken. The lower | |
338 | two bits must be zero. */ | |
339 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
340 | 0, /* rightshift */ | |
341 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
342 | 16, /* bitsize */ | |
b34976b6 | 343 | FALSE, /* pc_relative */ |
5bd4f169 AM |
344 | 0, /* bitpos */ |
345 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 346 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 347 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
b34976b6 | 348 | FALSE, /* partial_inplace */ |
d006db6c | 349 | 0, /* src_mask */ |
f5e87a1d | 350 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 351 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
352 | |
353 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
354 | HOWTO (R_PPC64_REL24, /* type */ | |
355 | 0, /* rightshift */ | |
356 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
357 | 26, /* bitsize */ | |
b34976b6 | 358 | TRUE, /* pc_relative */ |
5bd4f169 AM |
359 | 0, /* bitpos */ |
360 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 361 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 362 | "R_PPC64_REL24", /* name */ |
b34976b6 | 363 | FALSE, /* partial_inplace */ |
d006db6c | 364 | 0, /* src_mask */ |
f5e87a1d | 365 | 0x03fffffc, /* dst_mask */ |
b34976b6 | 366 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
367 | |
368 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
369 | HOWTO (R_PPC64_REL14, /* type */ | |
370 | 0, /* rightshift */ | |
371 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
372 | 16, /* bitsize */ | |
b34976b6 | 373 | TRUE, /* pc_relative */ |
5bd4f169 AM |
374 | 0, /* bitpos */ |
375 | complain_overflow_signed, /* complain_on_overflow */ | |
2441e016 | 376 | ppc64_elf_branch_reloc, /* special_function */ |
5bd4f169 | 377 | "R_PPC64_REL14", /* name */ |
b34976b6 | 378 | FALSE, /* partial_inplace */ |
d006db6c | 379 | 0, /* src_mask */ |
f5e87a1d | 380 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 381 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
382 | |
383 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
384 | the branch is expected to be taken. The lower two bits must be | |
385 | zero. */ | |
386 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
387 | 0, /* rightshift */ | |
388 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
389 | 16, /* bitsize */ | |
b34976b6 | 390 | TRUE, /* pc_relative */ |
5bd4f169 AM |
391 | 0, /* bitpos */ |
392 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 393 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 394 | "R_PPC64_REL14_BRTAKEN", /* name */ |
b34976b6 | 395 | FALSE, /* partial_inplace */ |
d006db6c | 396 | 0, /* src_mask */ |
f5e87a1d | 397 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 398 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
399 | |
400 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
401 | the branch is not expected to be taken. The lower two bits must | |
402 | be zero. */ | |
403 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
404 | 0, /* rightshift */ | |
405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
406 | 16, /* bitsize */ | |
b34976b6 | 407 | TRUE, /* pc_relative */ |
5bd4f169 AM |
408 | 0, /* bitpos */ |
409 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 410 | ppc64_elf_brtaken_reloc, /* special_function */ |
5bd4f169 | 411 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
b34976b6 | 412 | FALSE, /* partial_inplace */ |
d006db6c | 413 | 0, /* src_mask */ |
f5e87a1d | 414 | 0x0000fffc, /* dst_mask */ |
b34976b6 | 415 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
416 | |
417 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
418 | symbol. */ | |
419 | HOWTO (R_PPC64_GOT16, /* type */ | |
420 | 0, /* rightshift */ | |
421 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
422 | 16, /* bitsize */ | |
b34976b6 | 423 | FALSE, /* pc_relative */ |
5bd4f169 AM |
424 | 0, /* bitpos */ |
425 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 426 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 427 | "R_PPC64_GOT16", /* name */ |
b34976b6 | 428 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
429 | 0, /* src_mask */ |
430 | 0xffff, /* dst_mask */ | |
b34976b6 | 431 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
432 | |
433 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
434 | the symbol. */ | |
435 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
436 | 0, /* rightshift */ | |
437 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
438 | 16, /* bitsize */ | |
b34976b6 | 439 | FALSE, /* pc_relative */ |
5bd4f169 AM |
440 | 0, /* bitpos */ |
441 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 442 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 443 | "R_PPC64_GOT16_LO", /* name */ |
b34976b6 | 444 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
445 | 0, /* src_mask */ |
446 | 0xffff, /* dst_mask */ | |
b34976b6 | 447 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
448 | |
449 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
450 | the symbol. */ | |
451 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
452 | 16, /* rightshift */ | |
453 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
454 | 16, /* bitsize */ | |
b34976b6 | 455 | FALSE, /* pc_relative */ |
5bd4f169 AM |
456 | 0, /* bitpos */ |
457 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 458 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 459 | "R_PPC64_GOT16_HI", /* name */ |
b34976b6 | 460 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
461 | 0, /* src_mask */ |
462 | 0xffff, /* dst_mask */ | |
b34976b6 | 463 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
464 | |
465 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
466 | the symbol. */ | |
467 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
468 | 16, /* rightshift */ | |
469 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
470 | 16, /* bitsize */ | |
b34976b6 | 471 | FALSE, /* pc_relative */ |
5bd4f169 AM |
472 | 0, /* bitpos */ |
473 | complain_overflow_dont,/* complain_on_overflow */ | |
805fc799 | 474 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 475 | "R_PPC64_GOT16_HA", /* name */ |
b34976b6 | 476 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
477 | 0, /* src_mask */ |
478 | 0xffff, /* dst_mask */ | |
b34976b6 | 479 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
480 | |
481 | /* This is used only by the dynamic linker. The symbol should exist | |
482 | both in the object being run and in some shared library. The | |
483 | dynamic linker copies the data addressed by the symbol from the | |
484 | shared library into the object, because the object being | |
485 | run has to have the data at some particular address. */ | |
486 | HOWTO (R_PPC64_COPY, /* type */ | |
487 | 0, /* rightshift */ | |
f5e87a1d AM |
488 | 0, /* this one is variable size */ |
489 | 0, /* bitsize */ | |
b34976b6 | 490 | FALSE, /* pc_relative */ |
5bd4f169 | 491 | 0, /* bitpos */ |
f5e87a1d AM |
492 | complain_overflow_dont, /* complain_on_overflow */ |
493 | ppc64_elf_unhandled_reloc, /* special_function */ | |
5bd4f169 | 494 | "R_PPC64_COPY", /* name */ |
b34976b6 | 495 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
496 | 0, /* src_mask */ |
497 | 0, /* dst_mask */ | |
b34976b6 | 498 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
499 | |
500 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
501 | entries. */ | |
502 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
503 | 0, /* rightshift */ | |
504 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
505 | 64, /* bitsize */ | |
b34976b6 | 506 | FALSE, /* pc_relative */ |
5bd4f169 AM |
507 | 0, /* bitpos */ |
508 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 509 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 510 | "R_PPC64_GLOB_DAT", /* name */ |
b34976b6 | 511 | FALSE, /* partial_inplace */ |
5bd4f169 | 512 | 0, /* src_mask */ |
f5e87a1d | 513 | ONES (64), /* dst_mask */ |
b34976b6 | 514 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
515 | |
516 | /* Created by the link editor. Marks a procedure linkage table | |
517 | entry for a symbol. */ | |
518 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
519 | 0, /* rightshift */ | |
520 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
521 | 0, /* bitsize */ | |
b34976b6 | 522 | FALSE, /* pc_relative */ |
5bd4f169 AM |
523 | 0, /* bitpos */ |
524 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 525 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 526 | "R_PPC64_JMP_SLOT", /* name */ |
b34976b6 | 527 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
528 | 0, /* src_mask */ |
529 | 0, /* dst_mask */ | |
b34976b6 | 530 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
531 | |
532 | /* Used only by the dynamic linker. When the object is run, this | |
533 | doubleword64 is set to the load address of the object, plus the | |
534 | addend. */ | |
535 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
536 | 0, /* rightshift */ | |
537 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
538 | 64, /* bitsize */ | |
b34976b6 | 539 | FALSE, /* pc_relative */ |
5bd4f169 AM |
540 | 0, /* bitpos */ |
541 | complain_overflow_dont, /* complain_on_overflow */ | |
542 | bfd_elf_generic_reloc, /* special_function */ | |
543 | "R_PPC64_RELATIVE", /* name */ | |
b34976b6 | 544 | FALSE, /* partial_inplace */ |
5bd4f169 | 545 | 0, /* src_mask */ |
f5e87a1d | 546 | ONES (64), /* dst_mask */ |
b34976b6 | 547 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
548 | |
549 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
550 | HOWTO (R_PPC64_UADDR32, /* type */ | |
551 | 0, /* rightshift */ | |
552 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
553 | 32, /* bitsize */ | |
b34976b6 | 554 | FALSE, /* pc_relative */ |
5bd4f169 AM |
555 | 0, /* bitpos */ |
556 | complain_overflow_bitfield, /* complain_on_overflow */ | |
557 | bfd_elf_generic_reloc, /* special_function */ | |
558 | "R_PPC64_UADDR32", /* name */ | |
b34976b6 | 559 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
560 | 0, /* src_mask */ |
561 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 562 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
563 | |
564 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
565 | HOWTO (R_PPC64_UADDR16, /* type */ | |
566 | 0, /* rightshift */ | |
567 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
568 | 16, /* bitsize */ | |
b34976b6 | 569 | FALSE, /* pc_relative */ |
5bd4f169 AM |
570 | 0, /* bitpos */ |
571 | complain_overflow_bitfield, /* complain_on_overflow */ | |
572 | bfd_elf_generic_reloc, /* special_function */ | |
573 | "R_PPC64_UADDR16", /* name */ | |
b34976b6 | 574 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
575 | 0, /* src_mask */ |
576 | 0xffff, /* dst_mask */ | |
b34976b6 | 577 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
578 | |
579 | /* 32-bit PC relative. */ | |
580 | HOWTO (R_PPC64_REL32, /* type */ | |
581 | 0, /* rightshift */ | |
582 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
583 | 32, /* bitsize */ | |
b34976b6 | 584 | TRUE, /* pc_relative */ |
5bd4f169 | 585 | 0, /* bitpos */ |
cedb70c5 | 586 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
5bd4f169 AM |
587 | complain_overflow_signed, /* complain_on_overflow */ |
588 | bfd_elf_generic_reloc, /* special_function */ | |
589 | "R_PPC64_REL32", /* name */ | |
b34976b6 | 590 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
591 | 0, /* src_mask */ |
592 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 593 | TRUE), /* pcrel_offset */ |
5bd4f169 | 594 | |
10ed1bba | 595 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
596 | HOWTO (R_PPC64_PLT32, /* type */ |
597 | 0, /* rightshift */ | |
598 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
599 | 32, /* bitsize */ | |
b34976b6 | 600 | FALSE, /* pc_relative */ |
5bd4f169 AM |
601 | 0, /* bitpos */ |
602 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 603 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 604 | "R_PPC64_PLT32", /* name */ |
b34976b6 | 605 | FALSE, /* partial_inplace */ |
5bd4f169 | 606 | 0, /* src_mask */ |
f5e87a1d | 607 | 0xffffffff, /* dst_mask */ |
b34976b6 | 608 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
609 | |
610 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
611 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
612 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
613 | 0, /* rightshift */ | |
614 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
615 | 32, /* bitsize */ | |
b34976b6 | 616 | TRUE, /* pc_relative */ |
5bd4f169 AM |
617 | 0, /* bitpos */ |
618 | complain_overflow_signed, /* complain_on_overflow */ | |
619 | bfd_elf_generic_reloc, /* special_function */ | |
620 | "R_PPC64_PLTREL32", /* name */ | |
b34976b6 | 621 | FALSE, /* partial_inplace */ |
5bd4f169 | 622 | 0, /* src_mask */ |
f5e87a1d | 623 | 0xffffffff, /* dst_mask */ |
b34976b6 | 624 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
625 | |
626 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
627 | the symbol. */ | |
628 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
629 | 0, /* rightshift */ | |
630 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
631 | 16, /* bitsize */ | |
b34976b6 | 632 | FALSE, /* pc_relative */ |
5bd4f169 AM |
633 | 0, /* bitpos */ |
634 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 635 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 636 | "R_PPC64_PLT16_LO", /* name */ |
b34976b6 | 637 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
638 | 0, /* src_mask */ |
639 | 0xffff, /* dst_mask */ | |
b34976b6 | 640 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
641 | |
642 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
643 | the symbol. */ | |
644 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
645 | 16, /* rightshift */ | |
646 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
647 | 16, /* bitsize */ | |
b34976b6 | 648 | FALSE, /* pc_relative */ |
5bd4f169 AM |
649 | 0, /* bitpos */ |
650 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 651 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 652 | "R_PPC64_PLT16_HI", /* name */ |
b34976b6 | 653 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
654 | 0, /* src_mask */ |
655 | 0xffff, /* dst_mask */ | |
b34976b6 | 656 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
657 | |
658 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
659 | the symbol. */ | |
660 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
661 | 16, /* rightshift */ | |
662 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
663 | 16, /* bitsize */ | |
b34976b6 | 664 | FALSE, /* pc_relative */ |
5bd4f169 AM |
665 | 0, /* bitpos */ |
666 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 667 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 668 | "R_PPC64_PLT16_HA", /* name */ |
b34976b6 | 669 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
670 | 0, /* src_mask */ |
671 | 0xffff, /* dst_mask */ | |
b34976b6 | 672 | FALSE), /* pcrel_offset */ |
5bd4f169 | 673 | |
c061c2d8 | 674 | /* 16-bit section relative relocation. */ |
5bd4f169 AM |
675 | HOWTO (R_PPC64_SECTOFF, /* type */ |
676 | 0, /* rightshift */ | |
c061c2d8 AM |
677 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
678 | 16, /* bitsize */ | |
b34976b6 | 679 | FALSE, /* pc_relative */ |
5bd4f169 AM |
680 | 0, /* bitpos */ |
681 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 682 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 683 | "R_PPC64_SECTOFF", /* name */ |
b34976b6 | 684 | FALSE, /* partial_inplace */ |
5bd4f169 | 685 | 0, /* src_mask */ |
c061c2d8 | 686 | 0xffff, /* dst_mask */ |
b34976b6 | 687 | FALSE), /* pcrel_offset */ |
5bd4f169 | 688 | |
c061c2d8 | 689 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
5bd4f169 AM |
690 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
691 | 0, /* rightshift */ | |
692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
693 | 16, /* bitsize */ | |
b34976b6 | 694 | FALSE, /* pc_relative */ |
5bd4f169 AM |
695 | 0, /* bitpos */ |
696 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 697 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 698 | "R_PPC64_SECTOFF_LO", /* name */ |
b34976b6 | 699 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
700 | 0, /* src_mask */ |
701 | 0xffff, /* dst_mask */ | |
b34976b6 | 702 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
703 | |
704 | /* 16-bit upper half section relative relocation. */ | |
705 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
706 | 16, /* rightshift */ | |
707 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
708 | 16, /* bitsize */ | |
b34976b6 | 709 | FALSE, /* pc_relative */ |
5bd4f169 AM |
710 | 0, /* bitpos */ |
711 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 712 | ppc64_elf_sectoff_reloc, /* special_function */ |
5bd4f169 | 713 | "R_PPC64_SECTOFF_HI", /* name */ |
b34976b6 | 714 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
715 | 0, /* src_mask */ |
716 | 0xffff, /* dst_mask */ | |
b34976b6 | 717 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
718 | |
719 | /* 16-bit upper half adjusted section relative relocation. */ | |
720 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
721 | 16, /* rightshift */ | |
722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
723 | 16, /* bitsize */ | |
b34976b6 | 724 | FALSE, /* pc_relative */ |
5bd4f169 AM |
725 | 0, /* bitpos */ |
726 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 727 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
5bd4f169 | 728 | "R_PPC64_SECTOFF_HA", /* name */ |
b34976b6 | 729 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
730 | 0, /* src_mask */ |
731 | 0xffff, /* dst_mask */ | |
b34976b6 | 732 | FALSE), /* pcrel_offset */ |
5bd4f169 | 733 | |
04c9666a AM |
734 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
735 | HOWTO (R_PPC64_REL30, /* type */ | |
5bd4f169 AM |
736 | 2, /* rightshift */ |
737 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
738 | 30, /* bitsize */ | |
b34976b6 | 739 | TRUE, /* pc_relative */ |
5bd4f169 AM |
740 | 0, /* bitpos */ |
741 | complain_overflow_dont, /* complain_on_overflow */ | |
742 | bfd_elf_generic_reloc, /* special_function */ | |
04c9666a | 743 | "R_PPC64_REL30", /* name */ |
b34976b6 | 744 | FALSE, /* partial_inplace */ |
d006db6c | 745 | 0, /* src_mask */ |
5bd4f169 | 746 | 0xfffffffc, /* dst_mask */ |
b34976b6 | 747 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
748 | |
749 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
750 | ||
751 | /* A standard 64-bit relocation. */ | |
752 | HOWTO (R_PPC64_ADDR64, /* type */ | |
753 | 0, /* rightshift */ | |
754 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
755 | 64, /* bitsize */ | |
b34976b6 | 756 | FALSE, /* pc_relative */ |
5bd4f169 AM |
757 | 0, /* bitpos */ |
758 | complain_overflow_dont, /* complain_on_overflow */ | |
759 | bfd_elf_generic_reloc, /* special_function */ | |
760 | "R_PPC64_ADDR64", /* name */ | |
b34976b6 | 761 | FALSE, /* partial_inplace */ |
5bd4f169 | 762 | 0, /* src_mask */ |
f5e87a1d | 763 | ONES (64), /* dst_mask */ |
b34976b6 | 764 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
765 | |
766 | /* The bits 32-47 of an address. */ | |
767 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
768 | 32, /* rightshift */ | |
769 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
770 | 16, /* bitsize */ | |
b34976b6 | 771 | FALSE, /* pc_relative */ |
5bd4f169 AM |
772 | 0, /* bitpos */ |
773 | complain_overflow_dont, /* complain_on_overflow */ | |
774 | bfd_elf_generic_reloc, /* special_function */ | |
775 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
b34976b6 | 776 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
777 | 0, /* src_mask */ |
778 | 0xffff, /* dst_mask */ | |
b34976b6 | 779 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
780 | |
781 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
782 | 16 bits, treated as a signed number, is negative. */ | |
783 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
784 | 32, /* rightshift */ | |
785 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
786 | 16, /* bitsize */ | |
b34976b6 | 787 | FALSE, /* pc_relative */ |
5bd4f169 AM |
788 | 0, /* bitpos */ |
789 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 790 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 791 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
b34976b6 | 792 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
793 | 0, /* src_mask */ |
794 | 0xffff, /* dst_mask */ | |
b34976b6 | 795 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
796 | |
797 | /* The bits 48-63 of an address. */ | |
798 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
799 | 48, /* rightshift */ | |
800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
801 | 16, /* bitsize */ | |
b34976b6 | 802 | FALSE, /* pc_relative */ |
5bd4f169 AM |
803 | 0, /* bitpos */ |
804 | complain_overflow_dont, /* complain_on_overflow */ | |
805 | bfd_elf_generic_reloc, /* special_function */ | |
806 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
b34976b6 | 807 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
808 | 0, /* src_mask */ |
809 | 0xffff, /* dst_mask */ | |
b34976b6 | 810 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
811 | |
812 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
813 | 16 bits, treated as a signed number, is negative. */ | |
814 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
815 | 48, /* rightshift */ | |
816 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
817 | 16, /* bitsize */ | |
b34976b6 | 818 | FALSE, /* pc_relative */ |
5bd4f169 AM |
819 | 0, /* bitpos */ |
820 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 821 | ppc64_elf_ha_reloc, /* special_function */ |
5bd4f169 | 822 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
b34976b6 | 823 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
824 | 0, /* src_mask */ |
825 | 0xffff, /* dst_mask */ | |
b34976b6 | 826 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
827 | |
828 | /* Like ADDR64, but may be unaligned. */ | |
829 | HOWTO (R_PPC64_UADDR64, /* type */ | |
830 | 0, /* rightshift */ | |
831 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
832 | 64, /* bitsize */ | |
b34976b6 | 833 | FALSE, /* pc_relative */ |
5bd4f169 AM |
834 | 0, /* bitpos */ |
835 | complain_overflow_dont, /* complain_on_overflow */ | |
836 | bfd_elf_generic_reloc, /* special_function */ | |
837 | "R_PPC64_UADDR64", /* name */ | |
b34976b6 | 838 | FALSE, /* partial_inplace */ |
5bd4f169 | 839 | 0, /* src_mask */ |
f5e87a1d | 840 | ONES (64), /* dst_mask */ |
b34976b6 | 841 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
842 | |
843 | /* 64-bit relative relocation. */ | |
844 | HOWTO (R_PPC64_REL64, /* type */ | |
845 | 0, /* rightshift */ | |
846 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
847 | 64, /* bitsize */ | |
b34976b6 | 848 | TRUE, /* pc_relative */ |
5bd4f169 AM |
849 | 0, /* bitpos */ |
850 | complain_overflow_dont, /* complain_on_overflow */ | |
851 | bfd_elf_generic_reloc, /* special_function */ | |
852 | "R_PPC64_REL64", /* name */ | |
b34976b6 | 853 | FALSE, /* partial_inplace */ |
5bd4f169 | 854 | 0, /* src_mask */ |
f5e87a1d | 855 | ONES (64), /* dst_mask */ |
b34976b6 | 856 | TRUE), /* pcrel_offset */ |
5bd4f169 | 857 | |
cedb70c5 | 858 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
5bd4f169 AM |
859 | HOWTO (R_PPC64_PLT64, /* type */ |
860 | 0, /* rightshift */ | |
861 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
862 | 64, /* bitsize */ | |
b34976b6 | 863 | FALSE, /* pc_relative */ |
5bd4f169 AM |
864 | 0, /* bitpos */ |
865 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 866 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 867 | "R_PPC64_PLT64", /* name */ |
b34976b6 | 868 | FALSE, /* partial_inplace */ |
5bd4f169 | 869 | 0, /* src_mask */ |
f5e87a1d | 870 | ONES (64), /* dst_mask */ |
b34976b6 | 871 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
872 | |
873 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
874 | table. */ | |
875 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
876 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
877 | 0, /* rightshift */ | |
878 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
879 | 64, /* bitsize */ | |
b34976b6 | 880 | TRUE, /* pc_relative */ |
5bd4f169 AM |
881 | 0, /* bitpos */ |
882 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 883 | ppc64_elf_unhandled_reloc, /* special_function */ |
5bd4f169 | 884 | "R_PPC64_PLTREL64", /* name */ |
b34976b6 | 885 | FALSE, /* partial_inplace */ |
5bd4f169 | 886 | 0, /* src_mask */ |
f5e87a1d | 887 | ONES (64), /* dst_mask */ |
b34976b6 | 888 | TRUE), /* pcrel_offset */ |
5bd4f169 AM |
889 | |
890 | /* 16 bit TOC-relative relocation. */ | |
891 | ||
892 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
893 | HOWTO (R_PPC64_TOC16, /* type */ | |
894 | 0, /* rightshift */ | |
895 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
896 | 16, /* bitsize */ | |
b34976b6 | 897 | FALSE, /* pc_relative */ |
5bd4f169 AM |
898 | 0, /* bitpos */ |
899 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 900 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 901 | "R_PPC64_TOC16", /* name */ |
b34976b6 | 902 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
903 | 0, /* src_mask */ |
904 | 0xffff, /* dst_mask */ | |
b34976b6 | 905 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
906 | |
907 | /* 16 bit TOC-relative relocation without overflow. */ | |
908 | ||
909 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
910 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
911 | 0, /* rightshift */ | |
912 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
913 | 16, /* bitsize */ | |
b34976b6 | 914 | FALSE, /* pc_relative */ |
5bd4f169 AM |
915 | 0, /* bitpos */ |
916 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 917 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 918 | "R_PPC64_TOC16_LO", /* name */ |
b34976b6 | 919 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
920 | 0, /* src_mask */ |
921 | 0xffff, /* dst_mask */ | |
b34976b6 | 922 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
923 | |
924 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
925 | ||
926 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
927 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
928 | 16, /* rightshift */ | |
929 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
930 | 16, /* bitsize */ | |
b34976b6 | 931 | FALSE, /* pc_relative */ |
5bd4f169 AM |
932 | 0, /* bitpos */ |
933 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 934 | ppc64_elf_toc_reloc, /* special_function */ |
5bd4f169 | 935 | "R_PPC64_TOC16_HI", /* name */ |
b34976b6 | 936 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
937 | 0, /* src_mask */ |
938 | 0xffff, /* dst_mask */ | |
b34976b6 | 939 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
940 | |
941 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
942 | contents of the low 16 bits, treated as a signed number, is | |
943 | negative. */ | |
944 | ||
945 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
946 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
947 | 16, /* rightshift */ | |
948 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
949 | 16, /* bitsize */ | |
b34976b6 | 950 | FALSE, /* pc_relative */ |
5bd4f169 AM |
951 | 0, /* bitpos */ |
952 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 953 | ppc64_elf_toc_ha_reloc, /* special_function */ |
5bd4f169 | 954 | "R_PPC64_TOC16_HA", /* name */ |
b34976b6 | 955 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
956 | 0, /* src_mask */ |
957 | 0xffff, /* dst_mask */ | |
b34976b6 | 958 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
959 | |
960 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
961 | ||
962 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
963 | HOWTO (R_PPC64_TOC, /* type */ | |
964 | 0, /* rightshift */ | |
965 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
966 | 64, /* bitsize */ | |
b34976b6 | 967 | FALSE, /* pc_relative */ |
5bd4f169 AM |
968 | 0, /* bitpos */ |
969 | complain_overflow_bitfield, /* complain_on_overflow */ | |
805fc799 | 970 | ppc64_elf_toc64_reloc, /* special_function */ |
5bd4f169 | 971 | "R_PPC64_TOC", /* name */ |
b34976b6 | 972 | FALSE, /* partial_inplace */ |
5bd4f169 | 973 | 0, /* src_mask */ |
f5e87a1d | 974 | ONES (64), /* dst_mask */ |
b34976b6 | 975 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
976 | |
977 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
978 | value to relocate may (!) refer to a PLT entry which the link | |
979 | editor (a) may replace with the symbol value. If the link editor | |
980 | is unable to fully resolve the symbol, it may (b) create a PLT | |
981 | entry and store the address to the new PLT entry in the GOT. | |
982 | This permits lazy resolution of function symbols at run time. | |
983 | The link editor may also skip all of this and just (c) emit a | |
984 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
985 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
986 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
987 | 0, /* rightshift */ | |
988 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
989 | 16, /* bitsize */ | |
b34976b6 | 990 | FALSE, /* pc_relative */ |
5bd4f169 AM |
991 | 0, /* bitpos */ |
992 | complain_overflow_signed, /* complain_on_overflow */ | |
805fc799 | 993 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb AM |
994 | "R_PPC64_PLTGOT16", /* name */ |
995 | FALSE, /* partial_inplace */ | |
996 | 0, /* src_mask */ | |
997 | 0xffff, /* dst_mask */ | |
998 | FALSE), /* pcrel_offset */ | |
999 | ||
1000 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
1001 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1002 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
1003 | 0, /* rightshift */ | |
1004 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1005 | 16, /* bitsize */ | |
1006 | FALSE, /* pc_relative */ | |
1007 | 0, /* bitpos */ | |
1008 | complain_overflow_dont, /* complain_on_overflow */ | |
1009 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1010 | "R_PPC64_PLTGOT16_LO", /* name */ | |
1011 | FALSE, /* partial_inplace */ | |
1012 | 0, /* src_mask */ | |
1013 | 0xffff, /* dst_mask */ | |
1014 | FALSE), /* pcrel_offset */ | |
1015 | ||
1016 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
1017 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
1018 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
1019 | 16, /* rightshift */ | |
1020 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1021 | 16, /* bitsize */ | |
1022 | FALSE, /* pc_relative */ | |
1023 | 0, /* bitpos */ | |
1024 | complain_overflow_dont, /* complain_on_overflow */ | |
1025 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1026 | "R_PPC64_PLTGOT16_HI", /* name */ | |
1027 | FALSE, /* partial_inplace */ | |
1028 | 0, /* src_mask */ | |
1029 | 0xffff, /* dst_mask */ | |
1030 | FALSE), /* pcrel_offset */ | |
1031 | ||
1032 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
1033 | 1 if the contents of the low 16 bits, treated as a signed number, | |
1034 | is negative. */ | |
1035 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
1036 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
1037 | 16, /* rightshift */ | |
1038 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1039 | 16, /* bitsize */ | |
1040 | FALSE, /* pc_relative */ | |
1041 | 0, /* bitpos */ | |
1042 | complain_overflow_dont,/* complain_on_overflow */ | |
1043 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1044 | "R_PPC64_PLTGOT16_HA", /* name */ | |
1045 | FALSE, /* partial_inplace */ | |
1046 | 0, /* src_mask */ | |
1047 | 0xffff, /* dst_mask */ | |
1048 | FALSE), /* pcrel_offset */ | |
1049 | ||
1050 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
1051 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
1052 | 0, /* rightshift */ | |
1053 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1054 | 16, /* bitsize */ | |
1055 | FALSE, /* pc_relative */ | |
1056 | 0, /* bitpos */ | |
1057 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1058 | bfd_elf_generic_reloc, /* special_function */ | |
1059 | "R_PPC64_ADDR16_DS", /* name */ | |
1060 | FALSE, /* partial_inplace */ | |
1061 | 0, /* src_mask */ | |
1062 | 0xfffc, /* dst_mask */ | |
1063 | FALSE), /* pcrel_offset */ | |
1064 | ||
1065 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
1066 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
1067 | 0, /* rightshift */ | |
1068 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1069 | 16, /* bitsize */ | |
1070 | FALSE, /* pc_relative */ | |
1071 | 0, /* bitpos */ | |
1072 | complain_overflow_dont,/* complain_on_overflow */ | |
1073 | bfd_elf_generic_reloc, /* special_function */ | |
1074 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
1075 | FALSE, /* partial_inplace */ | |
1076 | 0, /* src_mask */ | |
1077 | 0xfffc, /* dst_mask */ | |
1078 | FALSE), /* pcrel_offset */ | |
1079 | ||
1080 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
1081 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
1082 | 0, /* rightshift */ | |
1083 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1084 | 16, /* bitsize */ | |
1085 | FALSE, /* pc_relative */ | |
1086 | 0, /* bitpos */ | |
1087 | complain_overflow_signed, /* complain_on_overflow */ | |
1088 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1089 | "R_PPC64_GOT16_DS", /* name */ | |
1090 | FALSE, /* partial_inplace */ | |
1091 | 0, /* src_mask */ | |
1092 | 0xfffc, /* dst_mask */ | |
1093 | FALSE), /* pcrel_offset */ | |
1094 | ||
1095 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
1096 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
1097 | 0, /* rightshift */ | |
1098 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1099 | 16, /* bitsize */ | |
1100 | FALSE, /* pc_relative */ | |
1101 | 0, /* bitpos */ | |
1102 | complain_overflow_dont, /* complain_on_overflow */ | |
1103 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1104 | "R_PPC64_GOT16_LO_DS", /* name */ | |
1105 | FALSE, /* partial_inplace */ | |
1106 | 0, /* src_mask */ | |
1107 | 0xfffc, /* dst_mask */ | |
1108 | FALSE), /* pcrel_offset */ | |
1109 | ||
1110 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
1111 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
1112 | 0, /* rightshift */ | |
1113 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1114 | 16, /* bitsize */ | |
1115 | FALSE, /* pc_relative */ | |
1116 | 0, /* bitpos */ | |
1117 | complain_overflow_dont, /* complain_on_overflow */ | |
1118 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1119 | "R_PPC64_PLT16_LO_DS", /* name */ | |
1120 | FALSE, /* partial_inplace */ | |
1121 | 0, /* src_mask */ | |
1122 | 0xfffc, /* dst_mask */ | |
1123 | FALSE), /* pcrel_offset */ | |
1124 | ||
1125 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
1126 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
1127 | 0, /* rightshift */ | |
1128 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1129 | 16, /* bitsize */ | |
1130 | FALSE, /* pc_relative */ | |
1131 | 0, /* bitpos */ | |
1132 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1133 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1134 | "R_PPC64_SECTOFF_DS", /* name */ | |
1135 | FALSE, /* partial_inplace */ | |
1136 | 0, /* src_mask */ | |
1137 | 0xfffc, /* dst_mask */ | |
1138 | FALSE), /* pcrel_offset */ | |
1139 | ||
1140 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
1141 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
1142 | 0, /* rightshift */ | |
1143 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1144 | 16, /* bitsize */ | |
1145 | FALSE, /* pc_relative */ | |
1146 | 0, /* bitpos */ | |
1147 | complain_overflow_dont, /* complain_on_overflow */ | |
1148 | ppc64_elf_sectoff_reloc, /* special_function */ | |
1149 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
1150 | FALSE, /* partial_inplace */ | |
1151 | 0, /* src_mask */ | |
1152 | 0xfffc, /* dst_mask */ | |
1153 | FALSE), /* pcrel_offset */ | |
1154 | ||
1155 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
1156 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
1157 | 0, /* rightshift */ | |
1158 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1159 | 16, /* bitsize */ | |
1160 | FALSE, /* pc_relative */ | |
1161 | 0, /* bitpos */ | |
1162 | complain_overflow_signed, /* complain_on_overflow */ | |
1163 | ppc64_elf_toc_reloc, /* special_function */ | |
1164 | "R_PPC64_TOC16_DS", /* name */ | |
1165 | FALSE, /* partial_inplace */ | |
1166 | 0, /* src_mask */ | |
1167 | 0xfffc, /* dst_mask */ | |
1168 | FALSE), /* pcrel_offset */ | |
1169 | ||
1170 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
1171 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
1172 | 0, /* rightshift */ | |
1173 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1174 | 16, /* bitsize */ | |
1175 | FALSE, /* pc_relative */ | |
1176 | 0, /* bitpos */ | |
1177 | complain_overflow_dont, /* complain_on_overflow */ | |
1178 | ppc64_elf_toc_reloc, /* special_function */ | |
1179 | "R_PPC64_TOC16_LO_DS", /* name */ | |
1180 | FALSE, /* partial_inplace */ | |
1181 | 0, /* src_mask */ | |
1182 | 0xfffc, /* dst_mask */ | |
1183 | FALSE), /* pcrel_offset */ | |
1184 | ||
1185 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
1186 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
1187 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ | |
1188 | 0, /* rightshift */ | |
1189 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1190 | 16, /* bitsize */ | |
1191 | FALSE, /* pc_relative */ | |
1192 | 0, /* bitpos */ | |
1193 | complain_overflow_signed, /* complain_on_overflow */ | |
1194 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1195 | "R_PPC64_PLTGOT16_DS", /* name */ | |
1196 | FALSE, /* partial_inplace */ | |
1197 | 0, /* src_mask */ | |
1198 | 0xfffc, /* dst_mask */ | |
1199 | FALSE), /* pcrel_offset */ | |
1200 | ||
1201 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
1202 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
1203 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
1204 | 0, /* rightshift */ | |
1205 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1206 | 16, /* bitsize */ | |
1207 | FALSE, /* pc_relative */ | |
1208 | 0, /* bitpos */ | |
1209 | complain_overflow_dont, /* complain_on_overflow */ | |
1210 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1211 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
1212 | FALSE, /* partial_inplace */ | |
1213 | 0, /* src_mask */ | |
1214 | 0xfffc, /* dst_mask */ | |
1215 | FALSE), /* pcrel_offset */ | |
1216 | ||
1217 | /* Marker reloc for TLS. */ | |
1218 | HOWTO (R_PPC64_TLS, | |
1219 | 0, /* rightshift */ | |
1220 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1221 | 32, /* bitsize */ | |
1222 | FALSE, /* pc_relative */ | |
1223 | 0, /* bitpos */ | |
1224 | complain_overflow_dont, /* complain_on_overflow */ | |
1225 | bfd_elf_generic_reloc, /* special_function */ | |
1226 | "R_PPC64_TLS", /* name */ | |
1227 | FALSE, /* partial_inplace */ | |
1228 | 0, /* src_mask */ | |
1229 | 0, /* dst_mask */ | |
1230 | FALSE), /* pcrel_offset */ | |
1231 | ||
1232 | /* Computes the load module index of the load module that contains the | |
1233 | definition of its TLS sym. */ | |
1234 | HOWTO (R_PPC64_DTPMOD64, | |
1235 | 0, /* rightshift */ | |
1236 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1237 | 64, /* bitsize */ | |
1238 | FALSE, /* pc_relative */ | |
1239 | 0, /* bitpos */ | |
1240 | complain_overflow_dont, /* complain_on_overflow */ | |
1241 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1242 | "R_PPC64_DTPMOD64", /* name */ | |
1243 | FALSE, /* partial_inplace */ | |
1244 | 0, /* src_mask */ | |
1245 | ONES (64), /* dst_mask */ | |
1246 | FALSE), /* pcrel_offset */ | |
1247 | ||
1248 | /* Computes a dtv-relative displacement, the difference between the value | |
1249 | of sym+add and the base address of the thread-local storage block that | |
1250 | contains the definition of sym, minus 0x8000. */ | |
1251 | HOWTO (R_PPC64_DTPREL64, | |
1252 | 0, /* rightshift */ | |
1253 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1254 | 64, /* bitsize */ | |
1255 | FALSE, /* pc_relative */ | |
1256 | 0, /* bitpos */ | |
1257 | complain_overflow_dont, /* complain_on_overflow */ | |
1258 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1259 | "R_PPC64_DTPREL64", /* name */ | |
1260 | FALSE, /* partial_inplace */ | |
1261 | 0, /* src_mask */ | |
1262 | ONES (64), /* dst_mask */ | |
1263 | FALSE), /* pcrel_offset */ | |
1264 | ||
1265 | /* A 16 bit dtprel reloc. */ | |
1266 | HOWTO (R_PPC64_DTPREL16, | |
1267 | 0, /* rightshift */ | |
1268 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1269 | 16, /* bitsize */ | |
1270 | FALSE, /* pc_relative */ | |
1271 | 0, /* bitpos */ | |
1272 | complain_overflow_signed, /* complain_on_overflow */ | |
1273 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1274 | "R_PPC64_DTPREL16", /* name */ | |
1275 | FALSE, /* partial_inplace */ | |
1276 | 0, /* src_mask */ | |
1277 | 0xffff, /* dst_mask */ | |
1278 | FALSE), /* pcrel_offset */ | |
1279 | ||
1280 | /* Like DTPREL16, but no overflow. */ | |
1281 | HOWTO (R_PPC64_DTPREL16_LO, | |
1282 | 0, /* rightshift */ | |
1283 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1284 | 16, /* bitsize */ | |
1285 | FALSE, /* pc_relative */ | |
1286 | 0, /* bitpos */ | |
1287 | complain_overflow_dont, /* complain_on_overflow */ | |
1288 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1289 | "R_PPC64_DTPREL16_LO", /* name */ | |
1290 | FALSE, /* partial_inplace */ | |
1291 | 0, /* src_mask */ | |
1292 | 0xffff, /* dst_mask */ | |
1293 | FALSE), /* pcrel_offset */ | |
1294 | ||
1295 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
1296 | HOWTO (R_PPC64_DTPREL16_HI, | |
1297 | 16, /* rightshift */ | |
1298 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1299 | 16, /* bitsize */ | |
1300 | FALSE, /* pc_relative */ | |
1301 | 0, /* bitpos */ | |
1302 | complain_overflow_dont, /* complain_on_overflow */ | |
1303 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1304 | "R_PPC64_DTPREL16_HI", /* name */ | |
1305 | FALSE, /* partial_inplace */ | |
1306 | 0, /* src_mask */ | |
1307 | 0xffff, /* dst_mask */ | |
1308 | FALSE), /* pcrel_offset */ | |
1309 | ||
1310 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
1311 | HOWTO (R_PPC64_DTPREL16_HA, | |
1312 | 16, /* rightshift */ | |
1313 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1314 | 16, /* bitsize */ | |
1315 | FALSE, /* pc_relative */ | |
1316 | 0, /* bitpos */ | |
1317 | complain_overflow_dont, /* complain_on_overflow */ | |
1318 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1319 | "R_PPC64_DTPREL16_HA", /* name */ | |
1320 | FALSE, /* partial_inplace */ | |
1321 | 0, /* src_mask */ | |
1322 | 0xffff, /* dst_mask */ | |
1323 | FALSE), /* pcrel_offset */ | |
1324 | ||
1325 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
1326 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
1327 | 32, /* rightshift */ | |
1328 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1329 | 16, /* bitsize */ | |
1330 | FALSE, /* pc_relative */ | |
1331 | 0, /* bitpos */ | |
1332 | complain_overflow_dont, /* complain_on_overflow */ | |
1333 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1334 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
1335 | FALSE, /* partial_inplace */ | |
1336 | 0, /* src_mask */ | |
1337 | 0xffff, /* dst_mask */ | |
1338 | FALSE), /* pcrel_offset */ | |
1339 | ||
1340 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
1341 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
1342 | 32, /* rightshift */ | |
1343 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1344 | 16, /* bitsize */ | |
1345 | FALSE, /* pc_relative */ | |
1346 | 0, /* bitpos */ | |
1347 | complain_overflow_dont, /* complain_on_overflow */ | |
1348 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1349 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
1350 | FALSE, /* partial_inplace */ | |
1351 | 0, /* src_mask */ | |
1352 | 0xffff, /* dst_mask */ | |
1353 | FALSE), /* pcrel_offset */ | |
1354 | ||
1355 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
1356 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
1357 | 48, /* rightshift */ | |
1358 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1359 | 16, /* bitsize */ | |
1360 | FALSE, /* pc_relative */ | |
1361 | 0, /* bitpos */ | |
1362 | complain_overflow_dont, /* complain_on_overflow */ | |
1363 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1364 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
1365 | FALSE, /* partial_inplace */ | |
1366 | 0, /* src_mask */ | |
1367 | 0xffff, /* dst_mask */ | |
1368 | FALSE), /* pcrel_offset */ | |
1369 | ||
1370 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1371 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
1372 | 48, /* rightshift */ | |
1373 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1374 | 16, /* bitsize */ | |
1375 | FALSE, /* pc_relative */ | |
1376 | 0, /* bitpos */ | |
1377 | complain_overflow_dont, /* complain_on_overflow */ | |
1378 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1379 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
1380 | FALSE, /* partial_inplace */ | |
1381 | 0, /* src_mask */ | |
1382 | 0xffff, /* dst_mask */ | |
1383 | FALSE), /* pcrel_offset */ | |
1384 | ||
1385 | /* Like DTPREL16, but for insns with a DS field. */ | |
1386 | HOWTO (R_PPC64_DTPREL16_DS, | |
1387 | 0, /* rightshift */ | |
1388 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1389 | 16, /* bitsize */ | |
1390 | FALSE, /* pc_relative */ | |
1391 | 0, /* bitpos */ | |
1392 | complain_overflow_signed, /* complain_on_overflow */ | |
1393 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1394 | "R_PPC64_DTPREL16_DS", /* name */ | |
1395 | FALSE, /* partial_inplace */ | |
1396 | 0, /* src_mask */ | |
1397 | 0xfffc, /* dst_mask */ | |
1398 | FALSE), /* pcrel_offset */ | |
1399 | ||
1400 | /* Like DTPREL16_DS, but no overflow. */ | |
1401 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
1402 | 0, /* rightshift */ | |
1403 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1404 | 16, /* bitsize */ | |
1405 | FALSE, /* pc_relative */ | |
1406 | 0, /* bitpos */ | |
1407 | complain_overflow_dont, /* complain_on_overflow */ | |
1408 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1409 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
1410 | FALSE, /* partial_inplace */ | |
1411 | 0, /* src_mask */ | |
1412 | 0xfffc, /* dst_mask */ | |
1413 | FALSE), /* pcrel_offset */ | |
1414 | ||
1415 | /* Computes a tp-relative displacement, the difference between the value of | |
1416 | sym+add and the value of the thread pointer (r13). */ | |
1417 | HOWTO (R_PPC64_TPREL64, | |
1418 | 0, /* rightshift */ | |
1419 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
1420 | 64, /* bitsize */ | |
1421 | FALSE, /* pc_relative */ | |
1422 | 0, /* bitpos */ | |
1423 | complain_overflow_dont, /* complain_on_overflow */ | |
1424 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1425 | "R_PPC64_TPREL64", /* name */ | |
1426 | FALSE, /* partial_inplace */ | |
1427 | 0, /* src_mask */ | |
1428 | ONES (64), /* dst_mask */ | |
1429 | FALSE), /* pcrel_offset */ | |
1430 | ||
1431 | /* A 16 bit tprel reloc. */ | |
1432 | HOWTO (R_PPC64_TPREL16, | |
1433 | 0, /* rightshift */ | |
1434 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1435 | 16, /* bitsize */ | |
1436 | FALSE, /* pc_relative */ | |
1437 | 0, /* bitpos */ | |
1438 | complain_overflow_signed, /* complain_on_overflow */ | |
1439 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1440 | "R_PPC64_TPREL16", /* name */ | |
1441 | FALSE, /* partial_inplace */ | |
1442 | 0, /* src_mask */ | |
1443 | 0xffff, /* dst_mask */ | |
1444 | FALSE), /* pcrel_offset */ | |
1445 | ||
1446 | /* Like TPREL16, but no overflow. */ | |
1447 | HOWTO (R_PPC64_TPREL16_LO, | |
1448 | 0, /* rightshift */ | |
1449 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1450 | 16, /* bitsize */ | |
1451 | FALSE, /* pc_relative */ | |
1452 | 0, /* bitpos */ | |
1453 | complain_overflow_dont, /* complain_on_overflow */ | |
1454 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1455 | "R_PPC64_TPREL16_LO", /* name */ | |
1456 | FALSE, /* partial_inplace */ | |
1457 | 0, /* src_mask */ | |
1458 | 0xffff, /* dst_mask */ | |
1459 | FALSE), /* pcrel_offset */ | |
1460 | ||
1461 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
1462 | HOWTO (R_PPC64_TPREL16_HI, | |
1463 | 16, /* rightshift */ | |
1464 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1465 | 16, /* bitsize */ | |
1466 | FALSE, /* pc_relative */ | |
1467 | 0, /* bitpos */ | |
1468 | complain_overflow_dont, /* complain_on_overflow */ | |
1469 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1470 | "R_PPC64_TPREL16_HI", /* name */ | |
1471 | FALSE, /* partial_inplace */ | |
1472 | 0, /* src_mask */ | |
1473 | 0xffff, /* dst_mask */ | |
1474 | FALSE), /* pcrel_offset */ | |
1475 | ||
1476 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
1477 | HOWTO (R_PPC64_TPREL16_HA, | |
1478 | 16, /* rightshift */ | |
1479 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1480 | 16, /* bitsize */ | |
1481 | FALSE, /* pc_relative */ | |
1482 | 0, /* bitpos */ | |
1483 | complain_overflow_dont, /* complain_on_overflow */ | |
1484 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1485 | "R_PPC64_TPREL16_HA", /* name */ | |
1486 | FALSE, /* partial_inplace */ | |
1487 | 0, /* src_mask */ | |
1488 | 0xffff, /* dst_mask */ | |
1489 | FALSE), /* pcrel_offset */ | |
1490 | ||
1491 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
1492 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
1493 | 32, /* rightshift */ | |
1494 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1495 | 16, /* bitsize */ | |
1496 | FALSE, /* pc_relative */ | |
1497 | 0, /* bitpos */ | |
1498 | complain_overflow_dont, /* complain_on_overflow */ | |
1499 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1500 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
1501 | FALSE, /* partial_inplace */ | |
1502 | 0, /* src_mask */ | |
1503 | 0xffff, /* dst_mask */ | |
1504 | FALSE), /* pcrel_offset */ | |
1505 | ||
1506 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
1507 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
1508 | 32, /* rightshift */ | |
1509 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1510 | 16, /* bitsize */ | |
1511 | FALSE, /* pc_relative */ | |
1512 | 0, /* bitpos */ | |
1513 | complain_overflow_dont, /* complain_on_overflow */ | |
1514 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1515 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
1516 | FALSE, /* partial_inplace */ | |
1517 | 0, /* src_mask */ | |
1518 | 0xffff, /* dst_mask */ | |
1519 | FALSE), /* pcrel_offset */ | |
1520 | ||
1521 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
1522 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
1523 | 48, /* rightshift */ | |
1524 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1525 | 16, /* bitsize */ | |
1526 | FALSE, /* pc_relative */ | |
1527 | 0, /* bitpos */ | |
1528 | complain_overflow_dont, /* complain_on_overflow */ | |
1529 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1530 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
1531 | FALSE, /* partial_inplace */ | |
1532 | 0, /* src_mask */ | |
1533 | 0xffff, /* dst_mask */ | |
1534 | FALSE), /* pcrel_offset */ | |
1535 | ||
1536 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
1537 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
1538 | 48, /* rightshift */ | |
1539 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1540 | 16, /* bitsize */ | |
1541 | FALSE, /* pc_relative */ | |
1542 | 0, /* bitpos */ | |
1543 | complain_overflow_dont, /* complain_on_overflow */ | |
1544 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1545 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
1546 | FALSE, /* partial_inplace */ | |
1547 | 0, /* src_mask */ | |
1548 | 0xffff, /* dst_mask */ | |
1549 | FALSE), /* pcrel_offset */ | |
1550 | ||
1551 | /* Like TPREL16, but for insns with a DS field. */ | |
1552 | HOWTO (R_PPC64_TPREL16_DS, | |
1553 | 0, /* rightshift */ | |
1554 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1555 | 16, /* bitsize */ | |
1556 | FALSE, /* pc_relative */ | |
1557 | 0, /* bitpos */ | |
1558 | complain_overflow_signed, /* complain_on_overflow */ | |
1559 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1560 | "R_PPC64_TPREL16_DS", /* name */ | |
1561 | FALSE, /* partial_inplace */ | |
1562 | 0, /* src_mask */ | |
1563 | 0xfffc, /* dst_mask */ | |
1564 | FALSE), /* pcrel_offset */ | |
1565 | ||
1566 | /* Like TPREL16_DS, but no overflow. */ | |
1567 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
1568 | 0, /* rightshift */ | |
1569 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1570 | 16, /* bitsize */ | |
1571 | FALSE, /* pc_relative */ | |
1572 | 0, /* bitpos */ | |
1573 | complain_overflow_dont, /* complain_on_overflow */ | |
1574 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1575 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
1576 | FALSE, /* partial_inplace */ | |
1577 | 0, /* src_mask */ | |
1578 | 0xfffc, /* dst_mask */ | |
1579 | FALSE), /* pcrel_offset */ | |
1580 | ||
1581 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
1582 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
1583 | to the first entry relative to the TOC base (r2). */ | |
1584 | HOWTO (R_PPC64_GOT_TLSGD16, | |
1585 | 0, /* rightshift */ | |
1586 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1587 | 16, /* bitsize */ | |
1588 | FALSE, /* pc_relative */ | |
1589 | 0, /* bitpos */ | |
1590 | complain_overflow_signed, /* complain_on_overflow */ | |
1591 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1592 | "R_PPC64_GOT_TLSGD16", /* name */ | |
b34976b6 | 1593 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1594 | 0, /* src_mask */ |
1595 | 0xffff, /* dst_mask */ | |
b34976b6 | 1596 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1597 | |
411e1bfb AM |
1598 | /* Like GOT_TLSGD16, but no overflow. */ |
1599 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
5bd4f169 AM |
1600 | 0, /* rightshift */ |
1601 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1602 | 16, /* bitsize */ | |
b34976b6 | 1603 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1604 | 0, /* bitpos */ |
1605 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1606 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1607 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
b34976b6 | 1608 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1609 | 0, /* src_mask */ |
1610 | 0xffff, /* dst_mask */ | |
b34976b6 | 1611 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1612 | |
411e1bfb AM |
1613 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
1614 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
5bd4f169 AM |
1615 | 16, /* rightshift */ |
1616 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1617 | 16, /* bitsize */ | |
b34976b6 | 1618 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1619 | 0, /* bitpos */ |
1620 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1621 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1622 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
b34976b6 | 1623 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1624 | 0, /* src_mask */ |
1625 | 0xffff, /* dst_mask */ | |
b34976b6 | 1626 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1627 | |
411e1bfb AM |
1628 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
1629 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
5bd4f169 AM |
1630 | 16, /* rightshift */ |
1631 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1632 | 16, /* bitsize */ | |
b34976b6 | 1633 | FALSE, /* pc_relative */ |
5bd4f169 | 1634 | 0, /* bitpos */ |
411e1bfb | 1635 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1636 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1637 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
b34976b6 | 1638 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1639 | 0, /* src_mask */ |
1640 | 0xffff, /* dst_mask */ | |
b34976b6 | 1641 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1642 | |
411e1bfb AM |
1643 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
1644 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
1645 | first entry relative to the TOC base (r2). */ | |
1646 | HOWTO (R_PPC64_GOT_TLSLD16, | |
5bd4f169 AM |
1647 | 0, /* rightshift */ |
1648 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1649 | 16, /* bitsize */ | |
b34976b6 | 1650 | FALSE, /* pc_relative */ |
5bd4f169 | 1651 | 0, /* bitpos */ |
411e1bfb AM |
1652 | complain_overflow_signed, /* complain_on_overflow */ |
1653 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1654 | "R_PPC64_GOT_TLSLD16", /* name */ | |
b34976b6 | 1655 | FALSE, /* partial_inplace */ |
d006db6c | 1656 | 0, /* src_mask */ |
411e1bfb | 1657 | 0xffff, /* dst_mask */ |
b34976b6 | 1658 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1659 | |
411e1bfb AM |
1660 | /* Like GOT_TLSLD16, but no overflow. */ |
1661 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
5bd4f169 AM |
1662 | 0, /* rightshift */ |
1663 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1664 | 16, /* bitsize */ | |
b34976b6 | 1665 | FALSE, /* pc_relative */ |
5bd4f169 | 1666 | 0, /* bitpos */ |
411e1bfb AM |
1667 | complain_overflow_dont, /* complain_on_overflow */ |
1668 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1669 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
b34976b6 | 1670 | FALSE, /* partial_inplace */ |
d006db6c | 1671 | 0, /* src_mask */ |
411e1bfb | 1672 | 0xffff, /* dst_mask */ |
b34976b6 | 1673 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1674 | |
411e1bfb AM |
1675 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
1676 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
1677 | 16, /* rightshift */ | |
5bd4f169 AM |
1678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1679 | 16, /* bitsize */ | |
b34976b6 | 1680 | FALSE, /* pc_relative */ |
5bd4f169 | 1681 | 0, /* bitpos */ |
411e1bfb | 1682 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1683 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1684 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
b34976b6 | 1685 | FALSE, /* partial_inplace */ |
d006db6c | 1686 | 0, /* src_mask */ |
411e1bfb | 1687 | 0xffff, /* dst_mask */ |
b34976b6 | 1688 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1689 | |
411e1bfb AM |
1690 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
1691 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
1692 | 16, /* rightshift */ | |
5bd4f169 AM |
1693 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1694 | 16, /* bitsize */ | |
b34976b6 | 1695 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1696 | 0, /* bitpos */ |
1697 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1698 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1699 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
b34976b6 | 1700 | FALSE, /* partial_inplace */ |
d006db6c | 1701 | 0, /* src_mask */ |
411e1bfb | 1702 | 0xffff, /* dst_mask */ |
b34976b6 | 1703 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1704 | |
411e1bfb AM |
1705 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
1706 | the offset to the entry relative to the TOC base (r2). */ | |
1707 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
5bd4f169 AM |
1708 | 0, /* rightshift */ |
1709 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1710 | 16, /* bitsize */ | |
b34976b6 | 1711 | FALSE, /* pc_relative */ |
5bd4f169 | 1712 | 0, /* bitpos */ |
411e1bfb | 1713 | complain_overflow_signed, /* complain_on_overflow */ |
805fc799 | 1714 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1715 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
b34976b6 | 1716 | FALSE, /* partial_inplace */ |
d006db6c | 1717 | 0, /* src_mask */ |
5bd4f169 | 1718 | 0xfffc, /* dst_mask */ |
b34976b6 | 1719 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1720 | |
411e1bfb AM |
1721 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
1722 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
5bd4f169 | 1723 | 0, /* rightshift */ |
c061c2d8 AM |
1724 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1725 | 16, /* bitsize */ | |
b34976b6 | 1726 | FALSE, /* pc_relative */ |
5bd4f169 | 1727 | 0, /* bitpos */ |
411e1bfb AM |
1728 | complain_overflow_dont, /* complain_on_overflow */ |
1729 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1730 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
b34976b6 | 1731 | FALSE, /* partial_inplace */ |
d006db6c | 1732 | 0, /* src_mask */ |
c061c2d8 | 1733 | 0xfffc, /* dst_mask */ |
b34976b6 | 1734 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1735 | |
411e1bfb AM |
1736 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
1737 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
1738 | 16, /* rightshift */ | |
5bd4f169 AM |
1739 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1740 | 16, /* bitsize */ | |
b34976b6 | 1741 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1742 | 0, /* bitpos */ |
1743 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1744 | ppc64_elf_unhandled_reloc, /* special_function */ |
1745 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
b34976b6 | 1746 | FALSE, /* partial_inplace */ |
d006db6c | 1747 | 0, /* src_mask */ |
411e1bfb | 1748 | 0xffff, /* dst_mask */ |
b34976b6 | 1749 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1750 | |
411e1bfb AM |
1751 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
1752 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
1753 | 16, /* rightshift */ | |
1754 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1755 | 16, /* bitsize */ | |
1756 | FALSE, /* pc_relative */ | |
1757 | 0, /* bitpos */ | |
1758 | complain_overflow_dont, /* complain_on_overflow */ | |
1759 | ppc64_elf_unhandled_reloc, /* special_function */ | |
1760 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
1761 | FALSE, /* partial_inplace */ | |
1762 | 0, /* src_mask */ | |
1763 | 0xffff, /* dst_mask */ | |
1764 | FALSE), /* pcrel_offset */ | |
1765 | ||
1766 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
1767 | offset to the entry relative to the TOC base (r2). */ | |
1768 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
5bd4f169 AM |
1769 | 0, /* rightshift */ |
1770 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1771 | 16, /* bitsize */ | |
b34976b6 | 1772 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1773 | 0, /* bitpos */ |
1774 | complain_overflow_signed, /* complain_on_overflow */ | |
411e1bfb AM |
1775 | ppc64_elf_unhandled_reloc, /* special_function */ |
1776 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
b34976b6 | 1777 | FALSE, /* partial_inplace */ |
d006db6c | 1778 | 0, /* src_mask */ |
ad8e1ba5 | 1779 | 0xfffc, /* dst_mask */ |
b34976b6 | 1780 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1781 | |
411e1bfb AM |
1782 | /* Like GOT_TPREL16_DS, but no overflow. */ |
1783 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
5bd4f169 AM |
1784 | 0, /* rightshift */ |
1785 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1786 | 16, /* bitsize */ | |
b34976b6 | 1787 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1788 | 0, /* bitpos */ |
1789 | complain_overflow_dont, /* complain_on_overflow */ | |
411e1bfb AM |
1790 | ppc64_elf_unhandled_reloc, /* special_function */ |
1791 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
b34976b6 | 1792 | FALSE, /* partial_inplace */ |
d006db6c | 1793 | 0, /* src_mask */ |
ad8e1ba5 | 1794 | 0xfffc, /* dst_mask */ |
b34976b6 | 1795 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1796 | |
411e1bfb AM |
1797 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
1798 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
1799 | 16, /* rightshift */ | |
5bd4f169 AM |
1800 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1801 | 16, /* bitsize */ | |
b34976b6 | 1802 | FALSE, /* pc_relative */ |
5bd4f169 | 1803 | 0, /* bitpos */ |
411e1bfb | 1804 | complain_overflow_dont, /* complain_on_overflow */ |
805fc799 | 1805 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1806 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
b34976b6 | 1807 | FALSE, /* partial_inplace */ |
d006db6c | 1808 | 0, /* src_mask */ |
411e1bfb | 1809 | 0xffff, /* dst_mask */ |
b34976b6 | 1810 | FALSE), /* pcrel_offset */ |
5bd4f169 | 1811 | |
411e1bfb AM |
1812 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
1813 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
1814 | 16, /* rightshift */ | |
5bd4f169 AM |
1815 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
1816 | 16, /* bitsize */ | |
b34976b6 | 1817 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1818 | 0, /* bitpos */ |
1819 | complain_overflow_dont, /* complain_on_overflow */ | |
805fc799 | 1820 | ppc64_elf_unhandled_reloc, /* special_function */ |
411e1bfb | 1821 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
b34976b6 | 1822 | FALSE, /* partial_inplace */ |
d006db6c | 1823 | 0, /* src_mask */ |
411e1bfb | 1824 | 0xffff, /* dst_mask */ |
b34976b6 | 1825 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1826 | |
1827 | /* GNU extension to record C++ vtable hierarchy. */ | |
1828 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
1829 | 0, /* rightshift */ | |
1830 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1831 | 0, /* bitsize */ | |
b34976b6 | 1832 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1833 | 0, /* bitpos */ |
1834 | complain_overflow_dont, /* complain_on_overflow */ | |
1835 | NULL, /* special_function */ | |
1836 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
b34976b6 | 1837 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1838 | 0, /* src_mask */ |
1839 | 0, /* dst_mask */ | |
b34976b6 | 1840 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1841 | |
1842 | /* GNU extension to record C++ vtable member usage. */ | |
1843 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
1844 | 0, /* rightshift */ | |
1845 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1846 | 0, /* bitsize */ | |
b34976b6 | 1847 | FALSE, /* pc_relative */ |
5bd4f169 AM |
1848 | 0, /* bitpos */ |
1849 | complain_overflow_dont, /* complain_on_overflow */ | |
1850 | NULL, /* special_function */ | |
1851 | "R_PPC64_GNU_VTENTRY", /* name */ | |
b34976b6 | 1852 | FALSE, /* partial_inplace */ |
5bd4f169 AM |
1853 | 0, /* src_mask */ |
1854 | 0, /* dst_mask */ | |
b34976b6 | 1855 | FALSE), /* pcrel_offset */ |
5bd4f169 AM |
1856 | }; |
1857 | ||
1858 | \f | |
1859 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
1860 | be done. */ | |
1861 | ||
1862 | static void | |
4ce794b7 | 1863 | ppc_howto_init (void) |
5bd4f169 AM |
1864 | { |
1865 | unsigned int i, type; | |
1866 | ||
1867 | for (i = 0; | |
1868 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
1869 | i++) | |
1870 | { | |
1871 | type = ppc64_elf_howto_raw[i].type; | |
1872 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
1873 | / sizeof (ppc64_elf_howto_table[0]))); | |
1874 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
1875 | } | |
1876 | } | |
1877 | ||
1878 | static reloc_howto_type * | |
4ce794b7 AM |
1879 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
1880 | bfd_reloc_code_real_type code) | |
5bd4f169 | 1881 | { |
411e1bfb | 1882 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
5bd4f169 AM |
1883 | |
1884 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
1885 | /* Initialize howto table if needed. */ | |
1886 | ppc_howto_init (); | |
1887 | ||
4ce794b7 | 1888 | switch (code) |
5bd4f169 AM |
1889 | { |
1890 | default: | |
4ce794b7 | 1891 | return NULL; |
5bd4f169 | 1892 | |
411e1bfb AM |
1893 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
1894 | break; | |
1895 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
1896 | break; | |
1897 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
1898 | break; | |
1899 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
1900 | break; | |
1901 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
1902 | break; | |
1903 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
1904 | break; | |
1905 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
5bd4f169 | 1906 | break; |
411e1bfb | 1907 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
5bd4f169 | 1908 | break; |
411e1bfb | 1909 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
5bd4f169 | 1910 | break; |
411e1bfb | 1911 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
5bd4f169 | 1912 | break; |
411e1bfb | 1913 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
5bd4f169 | 1914 | break; |
411e1bfb | 1915 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
5bd4f169 | 1916 | break; |
411e1bfb | 1917 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
5bd4f169 | 1918 | break; |
411e1bfb | 1919 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
5bd4f169 | 1920 | break; |
411e1bfb | 1921 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
5bd4f169 | 1922 | break; |
411e1bfb | 1923 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
5bd4f169 | 1924 | break; |
411e1bfb | 1925 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
5bd4f169 | 1926 | break; |
411e1bfb | 1927 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
5bd4f169 | 1928 | break; |
411e1bfb | 1929 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
5bd4f169 | 1930 | break; |
411e1bfb | 1931 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
5bd4f169 | 1932 | break; |
411e1bfb | 1933 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
5bd4f169 | 1934 | break; |
411e1bfb | 1935 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
5bd4f169 | 1936 | break; |
411e1bfb | 1937 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
5bd4f169 | 1938 | break; |
411e1bfb | 1939 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
5bd4f169 | 1940 | break; |
411e1bfb | 1941 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
5bd4f169 | 1942 | break; |
411e1bfb | 1943 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
5bd4f169 | 1944 | break; |
411e1bfb | 1945 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
5bd4f169 | 1946 | break; |
411e1bfb | 1947 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
5bd4f169 | 1948 | break; |
411e1bfb | 1949 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
5bd4f169 | 1950 | break; |
411e1bfb | 1951 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
5bd4f169 | 1952 | break; |
411e1bfb | 1953 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
5bd4f169 | 1954 | break; |
411e1bfb | 1955 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
5bd4f169 | 1956 | break; |
411e1bfb | 1957 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
5bd4f169 | 1958 | break; |
411e1bfb | 1959 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
5bd4f169 | 1960 | break; |
411e1bfb | 1961 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
5bd4f169 | 1962 | break; |
411e1bfb | 1963 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
5bd4f169 | 1964 | break; |
411e1bfb | 1965 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
5bd4f169 | 1966 | break; |
411e1bfb | 1967 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
5bd4f169 | 1968 | break; |
411e1bfb | 1969 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
5bd4f169 | 1970 | break; |
411e1bfb | 1971 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
5bd4f169 | 1972 | break; |
411e1bfb | 1973 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
5bd4f169 | 1974 | break; |
411e1bfb | 1975 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
5bd4f169 | 1976 | break; |
411e1bfb | 1977 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
5bd4f169 | 1978 | break; |
411e1bfb | 1979 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
5bd4f169 | 1980 | break; |
411e1bfb | 1981 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
5bd4f169 | 1982 | break; |
411e1bfb | 1983 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
5bd4f169 | 1984 | break; |
411e1bfb | 1985 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
5bd4f169 | 1986 | break; |
411e1bfb | 1987 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
5bd4f169 | 1988 | break; |
411e1bfb | 1989 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
5bd4f169 | 1990 | break; |
411e1bfb | 1991 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
5bd4f169 | 1992 | break; |
411e1bfb | 1993 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
5bd4f169 | 1994 | break; |
411e1bfb | 1995 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
5bd4f169 | 1996 | break; |
411e1bfb | 1997 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
5bd4f169 | 1998 | break; |
411e1bfb | 1999 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
5bd4f169 | 2000 | break; |
411e1bfb | 2001 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
5bd4f169 | 2002 | break; |
411e1bfb | 2003 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
5bd4f169 | 2004 | break; |
411e1bfb | 2005 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
5bd4f169 | 2006 | break; |
411e1bfb | 2007 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
5bd4f169 | 2008 | break; |
411e1bfb | 2009 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
5bd4f169 | 2010 | break; |
411e1bfb | 2011 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
5bd4f169 | 2012 | break; |
411e1bfb | 2013 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
5bd4f169 | 2014 | break; |
411e1bfb | 2015 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
5bd4f169 | 2016 | break; |
411e1bfb | 2017 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
5bd4f169 | 2018 | break; |
411e1bfb | 2019 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
5bd4f169 | 2020 | break; |
411e1bfb | 2021 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
5bd4f169 | 2022 | break; |
411e1bfb | 2023 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
5bd4f169 | 2024 | break; |
411e1bfb AM |
2025 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
2026 | break; | |
2027 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
2028 | break; | |
2029 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
2030 | break; | |
2031 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
2032 | break; | |
2033 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
2034 | break; | |
2035 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
2036 | break; | |
2037 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
2038 | break; | |
2039 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
2040 | break; | |
2041 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
2042 | break; | |
2043 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
2044 | break; | |
2045 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
2046 | break; | |
2047 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
2048 | break; | |
2049 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
2050 | break; | |
2051 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
2052 | break; | |
2053 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
2054 | break; | |
2055 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
2056 | break; | |
2057 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
2058 | break; | |
2059 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
2060 | break; | |
2061 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
2062 | break; | |
2063 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
2064 | break; | |
2065 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
2066 | break; | |
2067 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
2068 | break; | |
2069 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
2070 | break; | |
2071 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
2072 | break; | |
2073 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
2074 | break; | |
2075 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
2076 | break; | |
2077 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
2078 | break; | |
2079 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
2080 | break; | |
2081 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
2082 | break; | |
2083 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
2084 | break; | |
2085 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
2086 | break; | |
2087 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
2088 | break; | |
2089 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
2090 | break; | |
2091 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
2092 | break; | |
2093 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
5bd4f169 AM |
2094 | break; |
2095 | } | |
2096 | ||
4ce794b7 | 2097 | return ppc64_elf_howto_table[r]; |
5bd4f169 AM |
2098 | }; |
2099 | ||
2100 | /* Set the howto pointer for a PowerPC ELF reloc. */ | |
2101 | ||
2102 | static void | |
4ce794b7 AM |
2103 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2104 | Elf_Internal_Rela *dst) | |
5bd4f169 | 2105 | { |
65f38f15 AM |
2106 | unsigned int type; |
2107 | ||
ef60b7ff | 2108 | /* Initialize howto table if needed. */ |
5bd4f169 | 2109 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
2110 | ppc_howto_init (); |
2111 | ||
65f38f15 AM |
2112 | type = ELF64_R_TYPE (dst->r_info); |
2113 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
2114 | / sizeof (ppc64_elf_howto_table[0]))); | |
2115 | cache_ptr->howto = ppc64_elf_howto_table[type]; | |
5bd4f169 AM |
2116 | } |
2117 | ||
04c9666a | 2118 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
5bd4f169 AM |
2119 | |
2120 | static bfd_reloc_status_type | |
4ce794b7 AM |
2121 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2122 | void *data, asection *input_section, | |
2123 | bfd *output_bfd, char **error_message) | |
5bd4f169 | 2124 | { |
805fc799 AM |
2125 | /* If this is a relocatable link (output_bfd test tells us), just |
2126 | call the generic function. Any adjustment will be done at final | |
2127 | link time. */ | |
2128 | if (output_bfd != NULL) | |
cedb70c5 | 2129 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2130 | input_section, output_bfd, error_message); |
2131 | ||
2132 | /* Adjust the addend for sign extension of the low 16 bits. | |
2133 | We won't actually be using the low 16 bits, so trashing them | |
2134 | doesn't matter. */ | |
2135 | reloc_entry->addend += 0x8000; | |
2136 | return bfd_reloc_continue; | |
2137 | } | |
5bd4f169 | 2138 | |
2441e016 AM |
2139 | static bfd_reloc_status_type |
2140 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2141 | void *data, asection *input_section, | |
2142 | bfd *output_bfd, char **error_message) | |
2143 | { | |
2144 | if (output_bfd != NULL) | |
2145 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
2146 | input_section, output_bfd, error_message); | |
2147 | ||
2148 | if (strcmp (symbol->section->name, ".opd") == 0) | |
2149 | { | |
2150 | bfd_vma dest = opd_entry_value (symbol->section, | |
2151 | symbol->value + reloc_entry->addend, | |
2152 | NULL, NULL); | |
2153 | if (dest != (bfd_vma) -1) | |
2154 | reloc_entry->addend = dest - (symbol->value | |
2155 | + symbol->section->output_section->vma | |
2156 | + symbol->section->output_offset); | |
2157 | } | |
2158 | return bfd_reloc_continue; | |
2159 | } | |
2160 | ||
805fc799 | 2161 | static bfd_reloc_status_type |
4ce794b7 AM |
2162 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2163 | void *data, asection *input_section, | |
2164 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2165 | { |
2166 | long insn; | |
04c9666a | 2167 | enum elf_ppc64_reloc_type r_type; |
805fc799 AM |
2168 | bfd_size_type octets; |
2169 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
b34976b6 | 2170 | bfd_boolean is_power4 = FALSE; |
805fc799 AM |
2171 | |
2172 | /* If this is a relocatable link (output_bfd test tells us), just | |
2173 | call the generic function. Any adjustment will be done at final | |
2174 | link time. */ | |
5bd4f169 | 2175 | if (output_bfd != NULL) |
cedb70c5 | 2176 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2177 | input_section, output_bfd, error_message); |
2178 | ||
2179 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2180 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
2181 | insn &= ~(0x01 << 21); | |
4ce794b7 | 2182 | r_type = reloc_entry->howto->type; |
805fc799 AM |
2183 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
2184 | || r_type == R_PPC64_REL14_BRTAKEN) | |
cedb70c5 | 2185 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
805fc799 AM |
2186 | |
2187 | if (is_power4) | |
5bd4f169 | 2188 | { |
805fc799 AM |
2189 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
2190 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
2191 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
2192 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
2193 | insn |= 0x02 << 21; | |
2194 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
2195 | insn |= 0x08 << 21; | |
2196 | else | |
2441e016 | 2197 | goto out; |
5bd4f169 | 2198 | } |
805fc799 AM |
2199 | else |
2200 | { | |
2201 | bfd_vma target = 0; | |
2202 | bfd_vma from; | |
5bd4f169 | 2203 | |
805fc799 AM |
2204 | if (!bfd_is_com_section (symbol->section)) |
2205 | target = symbol->value; | |
2206 | target += symbol->section->output_section->vma; | |
2207 | target += symbol->section->output_offset; | |
2208 | target += reloc_entry->addend; | |
5bd4f169 | 2209 | |
805fc799 AM |
2210 | from = (reloc_entry->address |
2211 | + input_section->output_offset | |
2212 | + input_section->output_section->vma); | |
5bd4f169 | 2213 | |
805fc799 AM |
2214 | /* Invert 'y' bit if not the default. */ |
2215 | if ((bfd_signed_vma) (target - from) < 0) | |
2216 | insn ^= 0x01 << 21; | |
2217 | } | |
4ce794b7 | 2218 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
2441e016 AM |
2219 | out: |
2220 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
2221 | input_section, output_bfd, error_message); | |
805fc799 | 2222 | } |
5bd4f169 | 2223 | |
805fc799 | 2224 | static bfd_reloc_status_type |
4ce794b7 AM |
2225 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2226 | void *data, asection *input_section, | |
2227 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2228 | { |
2229 | /* If this is a relocatable link (output_bfd test tells us), just | |
2230 | call the generic function. Any adjustment will be done at final | |
2231 | link time. */ | |
2232 | if (output_bfd != NULL) | |
cedb70c5 | 2233 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 | 2234 | input_section, output_bfd, error_message); |
5bd4f169 | 2235 | |
805fc799 AM |
2236 | /* Subtract the symbol section base address. */ |
2237 | reloc_entry->addend -= symbol->section->output_section->vma; | |
5bd4f169 AM |
2238 | return bfd_reloc_continue; |
2239 | } | |
2240 | ||
805fc799 | 2241 | static bfd_reloc_status_type |
4ce794b7 AM |
2242 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2243 | void *data, asection *input_section, | |
2244 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2245 | { |
2246 | /* If this is a relocatable link (output_bfd test tells us), just | |
2247 | call the generic function. Any adjustment will be done at final | |
2248 | link time. */ | |
2249 | if (output_bfd != NULL) | |
cedb70c5 | 2250 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2251 | input_section, output_bfd, error_message); |
2252 | ||
2253 | /* Subtract the symbol section base address. */ | |
2254 | reloc_entry->addend -= symbol->section->output_section->vma; | |
2255 | ||
2256 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2257 | reloc_entry->addend += 0x8000; | |
2258 | return bfd_reloc_continue; | |
2259 | } | |
2260 | ||
2261 | static bfd_reloc_status_type | |
4ce794b7 AM |
2262 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2263 | void *data, asection *input_section, | |
2264 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2265 | { |
2266 | bfd_vma TOCstart; | |
2267 | ||
2268 | /* If this is a relocatable link (output_bfd test tells us), just | |
2269 | call the generic function. Any adjustment will be done at final | |
2270 | link time. */ | |
2271 | if (output_bfd != NULL) | |
cedb70c5 | 2272 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2273 | input_section, output_bfd, error_message); |
2274 | ||
2275 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2276 | if (TOCstart == 0) | |
2277 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2278 | ||
2279 | /* Subtract the TOC base address. */ | |
2280 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2281 | return bfd_reloc_continue; | |
2282 | } | |
2283 | ||
2284 | static bfd_reloc_status_type | |
4ce794b7 AM |
2285 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2286 | void *data, asection *input_section, | |
2287 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2288 | { |
2289 | bfd_vma TOCstart; | |
2290 | ||
2291 | /* If this is a relocatable link (output_bfd test tells us), just | |
2292 | call the generic function. Any adjustment will be done at final | |
2293 | link time. */ | |
2294 | if (output_bfd != NULL) | |
cedb70c5 | 2295 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2296 | input_section, output_bfd, error_message); |
2297 | ||
2298 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2299 | if (TOCstart == 0) | |
2300 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2301 | ||
2302 | /* Subtract the TOC base address. */ | |
2303 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
2304 | ||
2305 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
2306 | reloc_entry->addend += 0x8000; | |
2307 | return bfd_reloc_continue; | |
2308 | } | |
2309 | ||
2310 | static bfd_reloc_status_type | |
4ce794b7 AM |
2311 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2312 | void *data, asection *input_section, | |
2313 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2314 | { |
2315 | bfd_vma TOCstart; | |
2316 | bfd_size_type octets; | |
2317 | ||
2318 | /* If this is a relocatable link (output_bfd test tells us), just | |
2319 | call the generic function. Any adjustment will be done at final | |
2320 | link time. */ | |
2321 | if (output_bfd != NULL) | |
cedb70c5 | 2322 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2323 | input_section, output_bfd, error_message); |
2324 | ||
2325 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
2326 | if (TOCstart == 0) | |
2327 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
2328 | ||
2329 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
2330 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
2331 | return bfd_reloc_ok; | |
2332 | } | |
2333 | ||
2334 | static bfd_reloc_status_type | |
4ce794b7 AM |
2335 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
2336 | void *data, asection *input_section, | |
2337 | bfd *output_bfd, char **error_message) | |
805fc799 AM |
2338 | { |
2339 | /* If this is a relocatable link (output_bfd test tells us), just | |
2340 | call the generic function. Any adjustment will be done at final | |
2341 | link time. */ | |
2342 | if (output_bfd != NULL) | |
cedb70c5 | 2343 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
805fc799 AM |
2344 | input_section, output_bfd, error_message); |
2345 | ||
2346 | if (error_message != NULL) | |
2347 | { | |
2348 | static char buf[60]; | |
2349 | sprintf (buf, "generic linker can't handle %s", | |
2350 | reloc_entry->howto->name); | |
2351 | *error_message = buf; | |
2352 | } | |
2353 | return bfd_reloc_dangerous; | |
2354 | } | |
2355 | ||
e717da7e AM |
2356 | struct ppc64_elf_obj_tdata |
2357 | { | |
2358 | struct elf_obj_tdata elf; | |
2359 | ||
2360 | /* Shortcuts to dynamic linker sections. */ | |
2361 | asection *got; | |
2362 | asection *relgot; | |
2363 | ||
81688140 AM |
2364 | /* Used during garbage collection. We attach global symbols defined |
2365 | on removed .opd entries to this section so that the sym is removed. */ | |
2366 | asection *deleted_section; | |
2367 | ||
e717da7e AM |
2368 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
2369 | sections means we potentially need one of these for each input bfd. */ | |
2370 | union { | |
2371 | bfd_signed_vma refcount; | |
2372 | bfd_vma offset; | |
2373 | } tlsld_got; | |
2374 | }; | |
2375 | ||
2376 | #define ppc64_elf_tdata(bfd) \ | |
2377 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
2378 | ||
2379 | #define ppc64_tlsld_got(bfd) \ | |
2380 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
2381 | ||
2382 | /* Override the generic function because we store some extras. */ | |
2383 | ||
2384 | static bfd_boolean | |
2385 | ppc64_elf_mkobject (bfd *abfd) | |
2386 | { | |
2387 | bfd_size_type amt = sizeof (struct ppc64_elf_obj_tdata); | |
2388 | abfd->tdata.any = bfd_zalloc (abfd, amt); | |
2389 | if (abfd->tdata.any == NULL) | |
2390 | return FALSE; | |
2391 | return TRUE; | |
2392 | } | |
2393 | ||
feee612b AM |
2394 | /* Fix bad default arch selected for a 64 bit input bfd when the |
2395 | default is 32 bit. */ | |
2396 | ||
b34976b6 | 2397 | static bfd_boolean |
4ce794b7 | 2398 | ppc64_elf_object_p (bfd *abfd) |
feee612b AM |
2399 | { |
2400 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
2401 | { | |
2402 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
2403 | ||
2404 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
2405 | { | |
2406 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
2407 | abfd->arch_info = abfd->arch_info->next; | |
2408 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
2409 | } | |
2410 | } | |
b34976b6 | 2411 | return TRUE; |
feee612b AM |
2412 | } |
2413 | ||
d37c89e5 AM |
2414 | /* Support for core dump NOTE sections. */ |
2415 | ||
2416 | static bfd_boolean | |
2417 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2418 | { | |
eea6121a | 2419 | size_t offset, size; |
d37c89e5 AM |
2420 | |
2421 | if (note->descsz != 504) | |
2422 | return FALSE; | |
2423 | ||
2424 | /* pr_cursig */ | |
2425 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
2426 | ||
2427 | /* pr_pid */ | |
2428 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
2429 | ||
2430 | /* pr_reg */ | |
2431 | offset = 112; | |
eea6121a | 2432 | size = 384; |
d37c89e5 AM |
2433 | |
2434 | /* Make a ".reg/999" section. */ | |
2435 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
eea6121a | 2436 | size, note->descpos + offset); |
d37c89e5 AM |
2437 | } |
2438 | ||
2439 | static bfd_boolean | |
2440 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2441 | { | |
2442 | if (note->descsz != 136) | |
2443 | return FALSE; | |
2444 | ||
2445 | elf_tdata (abfd)->core_program | |
2446 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
2447 | elf_tdata (abfd)->core_command | |
2448 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
2449 | ||
2450 | return TRUE; | |
2451 | } | |
2452 | ||
5bd4f169 AM |
2453 | /* Merge backend specific data from an object file to the output |
2454 | object file when linking. */ | |
2f6d9989 | 2455 | |
b34976b6 | 2456 | static bfd_boolean |
4ce794b7 | 2457 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
5bd4f169 | 2458 | { |
5bd4f169 AM |
2459 | /* Check if we have the same endianess. */ |
2460 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
87e226ce | 2461 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
5bd4f169 AM |
2462 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
2463 | { | |
2464 | const char *msg; | |
2465 | ||
2466 | if (bfd_big_endian (ibfd)) | |
d003868e | 2467 | msg = _("%B: compiled for a big endian system " |
4ce794b7 | 2468 | "and target is little endian"); |
5bd4f169 | 2469 | else |
d003868e | 2470 | msg = _("%B: compiled for a little endian system " |
4ce794b7 | 2471 | "and target is big endian"); |
5bd4f169 | 2472 | |
d003868e | 2473 | (*_bfd_error_handler) (msg, ibfd); |
5bd4f169 AM |
2474 | |
2475 | bfd_set_error (bfd_error_wrong_format); | |
b34976b6 | 2476 | return FALSE; |
5bd4f169 AM |
2477 | } |
2478 | ||
b34976b6 | 2479 | return TRUE; |
5bd4f169 | 2480 | } |
f0abc2a1 | 2481 | |
5d35169e AM |
2482 | /* Add extra PPC sections. */ |
2483 | ||
2484 | static struct bfd_elf_special_section const ppc64_elf_special_sections[]= | |
2485 | { | |
7dcb9820 AM |
2486 | { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
2487 | { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2488 | { ".plt", 4, 0, SHT_NOBITS, 0 }, | |
2489 | { ".toc", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2490 | { ".toc1", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
2491 | { ".tocbss", 7, 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
2492 | { NULL, 0, 0, 0, 0 } | |
5d35169e AM |
2493 | }; |
2494 | ||
f0abc2a1 AM |
2495 | struct _ppc64_elf_section_data |
2496 | { | |
2497 | struct bfd_elf_section_data elf; | |
411e1bfb AM |
2498 | |
2499 | /* An array with one entry for each opd function descriptor. */ | |
f0abc2a1 AM |
2500 | union |
2501 | { | |
411e1bfb | 2502 | /* Points to the function code section for local opd entries. */ |
f0abc2a1 | 2503 | asection **func_sec; |
411e1bfb | 2504 | /* After editing .opd, adjust references to opd local syms. */ |
f0abc2a1 AM |
2505 | long *adjust; |
2506 | } opd; | |
411e1bfb AM |
2507 | |
2508 | /* An array for toc sections, indexed by offset/8. | |
2509 | Specifies the relocation symbol index used at a given toc offset. */ | |
2510 | unsigned *t_symndx; | |
f0abc2a1 AM |
2511 | }; |
2512 | ||
2513 | #define ppc64_elf_section_data(sec) \ | |
411e1bfb | 2514 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
f0abc2a1 AM |
2515 | |
2516 | static bfd_boolean | |
4ce794b7 | 2517 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
f0abc2a1 AM |
2518 | { |
2519 | struct _ppc64_elf_section_data *sdata; | |
2520 | bfd_size_type amt = sizeof (*sdata); | |
2521 | ||
4ce794b7 | 2522 | sdata = bfd_zalloc (abfd, amt); |
f0abc2a1 AM |
2523 | if (sdata == NULL) |
2524 | return FALSE; | |
4ce794b7 | 2525 | sec->used_by_bfd = sdata; |
f0abc2a1 AM |
2526 | |
2527 | return _bfd_elf_new_section_hook (abfd, sec); | |
2528 | } | |
4025353c AM |
2529 | |
2530 | static void * | |
2531 | get_opd_info (asection * sec) | |
2532 | { | |
2533 | if (sec != NULL | |
2534 | && ppc64_elf_section_data (sec) != NULL | |
2535 | && ppc64_elf_section_data (sec)->opd.adjust != NULL) | |
2536 | return ppc64_elf_section_data (sec)->opd.adjust; | |
2537 | return NULL; | |
2538 | } | |
90e3cdf2 JJ |
2539 | \f |
2540 | /* Parameters for the qsort hook. */ | |
2541 | static asection *synthetic_opd; | |
2542 | static bfd_boolean synthetic_relocatable; | |
2543 | ||
2544 | /* Helper routine for ppc64_elf_get_synthetic_symtab. */ | |
2545 | ||
2546 | static int | |
2547 | compare_symbols (const void *ap, const void *bp) | |
2548 | { | |
2549 | const asymbol *a = * (const asymbol **) ap; | |
2550 | const asymbol *b = * (const asymbol **) bp; | |
2551 | ||
2552 | if ((a->flags & BSF_SECTION_SYM) == 0 && (b->flags & BSF_SECTION_SYM)) | |
2553 | return -1; | |
2554 | if ((a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM) == 0) | |
2555 | return 1; | |
2556 | ||
2557 | if (a->section == synthetic_opd && b->section != synthetic_opd) | |
2558 | return -1; | |
2559 | if (a->section != synthetic_opd && b->section == synthetic_opd) | |
2560 | return 1; | |
2561 | ||
2562 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2563 | == (SEC_CODE | SEC_ALLOC) | |
2564 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2565 | != (SEC_CODE | SEC_ALLOC)) | |
2566 | return -1; | |
2567 | ||
2568 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2569 | != (SEC_CODE | SEC_ALLOC) | |
2570 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2571 | == (SEC_CODE | SEC_ALLOC)) | |
2572 | return 1; | |
2573 | ||
2574 | if (synthetic_relocatable) | |
2575 | { | |
2576 | if (a->section->id < b->section->id) | |
2577 | return -1; | |
2578 | ||
2579 | if (a->section->id > b->section->id) | |
2580 | return 1; | |
2581 | } | |
2582 | ||
2583 | if (a->value + a->section->vma < b->value + b->section->vma) | |
2584 | return -1; | |
2585 | ||
2586 | if (a->value + a->section->vma > b->value + b->section->vma) | |
2587 | return 1; | |
2588 | ||
2589 | return 0; | |
2590 | } | |
2591 | ||
2592 | /* Helper routine for ppc64_elf_get_synthetic_symtab. */ | |
2593 | ||
2594 | static int | |
2595 | compare_relocs (const void *ap, const void *bp) | |
2596 | { | |
2597 | const arelent *a = * (const arelent **) ap; | |
2598 | const arelent *b = * (const arelent **) bp; | |
2599 | ||
2600 | if (a->address < b->address) | |
2601 | return -1; | |
2602 | ||
2603 | if (a->address > b->address) | |
2604 | return 1; | |
2605 | ||
2606 | return 0; | |
2607 | } | |
2608 | ||
2609 | /* Create synthetic symbols. */ | |
2610 | ||
2611 | static long | |
2612 | ppc64_elf_get_synthetic_symtab (bfd *abfd, asymbol **relsyms, asymbol **ret) | |
2613 | { | |
2614 | asymbol *s; | |
2615 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); | |
2616 | arelent **relocs, **r; | |
2617 | long count, i; | |
2618 | size_t size; | |
2619 | char *names; | |
2620 | asymbol **syms = NULL; | |
2621 | long symcount = 0, opdsymcount, relcount; | |
2622 | asection *relopd, *opd; | |
2623 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; | |
2624 | ||
2625 | *ret = NULL; | |
2626 | ||
2627 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
2628 | if (opd == NULL) | |
2629 | return 0; | |
2630 | ||
2631 | if ((bfd_get_file_flags (abfd) & HAS_SYMS)) | |
2632 | { | |
2633 | long storage; | |
2634 | storage = bfd_get_symtab_upper_bound (abfd); | |
2635 | if (storage < 0) | |
2636 | return 0; | |
2637 | ||
2638 | if (storage) | |
2639 | { | |
2640 | syms = bfd_malloc (storage); | |
2641 | if (syms == NULL) | |
2642 | return 0; | |
2643 | } | |
2644 | ||
2645 | symcount = bfd_canonicalize_symtab (abfd, syms); | |
2646 | if (symcount < 0) | |
2647 | { | |
2648 | free (syms); | |
2649 | return 0; | |
2650 | } | |
2651 | ||
2652 | if (symcount == 0) | |
2653 | { | |
2654 | free (syms); | |
2655 | syms = NULL; | |
2656 | } | |
2657 | } | |
2658 | ||
2659 | if (symcount == 0) | |
2660 | { | |
2661 | long storage; | |
2662 | ||
2663 | storage = bfd_get_dynamic_symtab_upper_bound (abfd); | |
2664 | if (storage < 0) | |
2665 | return 0; | |
2666 | ||
2667 | if (storage) | |
2668 | { | |
2669 | syms = bfd_malloc (storage); | |
2670 | if (syms == NULL) | |
2671 | return 0; | |
2672 | } | |
2673 | ||
2674 | symcount = bfd_canonicalize_dynamic_symtab (abfd, syms); | |
2675 | if (symcount < 0) | |
2676 | { | |
2677 | free (syms); | |
2678 | return 0; | |
2679 | } | |
2680 | } | |
2681 | ||
2682 | synthetic_opd = opd; | |
2683 | synthetic_relocatable = relocatable; | |
2684 | qsort (syms, symcount, sizeof (asymbol *), compare_symbols); | |
2685 | ||
2686 | opdsymcount = symcount; | |
2687 | for (i = 0; i < symcount; ++i) | |
2688 | { | |
2689 | if (syms[i]->flags & BSF_SECTION_SYM) | |
2690 | { | |
2691 | if (opdsymcount == symcount) | |
2692 | opdsymcount = i; | |
2693 | symcount = i; | |
2694 | break; | |
2695 | } | |
2696 | ||
2697 | if (syms[i]->section == opd) | |
2698 | continue; | |
2699 | ||
2700 | if (opdsymcount == symcount) | |
2701 | opdsymcount = i; | |
2702 | ||
2703 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
2704 | != (SEC_CODE | SEC_ALLOC)) | |
2705 | { | |
2706 | symcount = i; | |
2707 | break; | |
2708 | } | |
2709 | } | |
2710 | ||
2711 | if (opdsymcount == 0) | |
2712 | { | |
2713 | free (syms); | |
2714 | return 0; | |
2715 | } | |
2716 | ||
2717 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
2718 | if (! relocatable) | |
2719 | { | |
2720 | relopd = bfd_get_section_by_name (abfd, ".rela.opd"); | |
2721 | if (relopd == NULL) | |
2722 | { | |
2723 | relopd = bfd_get_section_by_name (abfd, ".rela.dyn"); | |
2724 | if (relopd == NULL) | |
2725 | { | |
2726 | free (syms); | |
2727 | return 0; | |
2728 | } | |
2729 | } | |
2730 | relcount = relopd->size / 24; | |
2731 | ||
2732 | if (! relcount | |
2733 | || ! (*slurp_relocs) (abfd, relopd, relsyms, TRUE)) | |
2734 | { | |
2735 | free (syms); | |
2736 | return 0; | |
2737 | } | |
2738 | } | |
2739 | else | |
2740 | { | |
2741 | relopd = opd; | |
2742 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; | |
2743 | ||
2744 | if (! relcount | |
2745 | || ! (*slurp_relocs) (abfd, relopd, relsyms, FALSE)) | |
2746 | { | |
2747 | free (syms); | |
2748 | return 0; | |
2749 | } | |
2750 | } | |
2751 | ||
2752 | relocs = bfd_malloc (relcount * sizeof (arelent **)); | |
2753 | if (relocs == NULL) | |
2754 | { | |
2755 | free (syms); | |
2756 | return 0; | |
2757 | } | |
2758 | ||
2759 | for (i = 0; i < relcount; ++i) | |
2760 | relocs[i] = &relopd->relocation[i]; | |
2761 | ||
2762 | qsort (relocs, relcount, sizeof (*relocs), compare_relocs); | |
2763 | ||
2764 | size = 0; | |
2765 | count = 0; | |
2766 | for (i = 0, r = relocs; i < opdsymcount; ++i) | |
2767 | { | |
2768 | long lo, hi, mid; | |
2769 | asymbol *sym; | |
2770 | ||
2771 | while (r < relocs + relcount | |
2772 | && (*r)->address < syms[i]->value + opd->vma) | |
2773 | ++r; | |
2774 | ||
2775 | if (r == relocs + relcount) | |
2776 | continue; | |
2777 | ||
2778 | if ((*r)->address != syms[i]->value + opd->vma) | |
2779 | continue; | |
2780 | ||
2781 | if ((*r)->howto->type != (relocatable | |
2782 | ? R_PPC64_ADDR64 : R_PPC64_RELATIVE)) | |
2783 | continue; | |
2784 | ||
2785 | lo = opdsymcount; | |
2786 | hi = symcount; | |
2787 | sym = *((*r)->sym_ptr_ptr); | |
2788 | if (relocatable) | |
2789 | while (lo < hi) | |
2790 | { | |
2791 | mid = (lo + hi) >> 1; | |
2792 | if (syms[mid]->section->id < sym->section->id) | |
2793 | lo = mid + 1; | |
2794 | else if (syms[mid]->section->id > sym->section->id) | |
2795 | hi = mid; | |
2796 | else if (syms[mid]->value < sym->value + (*r)->addend) | |
2797 | lo = mid + 1; | |
2798 | else if (syms[mid]->value > sym->value + (*r)->addend) | |
2799 | hi = mid; | |
2800 | else | |
2801 | break; | |
2802 | } | |
2803 | else | |
2804 | while (lo < hi) | |
2805 | { | |
2806 | mid = (lo + hi) >> 1; | |
2807 | if (syms[mid]->value + syms[mid]->section->vma < (*r)->addend) | |
2808 | lo = mid + 1; | |
2809 | else if (syms[mid]->value + syms[mid]->section->vma > (*r)->addend) | |
2810 | hi = mid; | |
2811 | else | |
2812 | break; | |
2813 | } | |
2814 | ||
2815 | if (lo >= hi) | |
2816 | { | |
2817 | ++count; | |
2818 | size += sizeof (asymbol); | |
2819 | size += strlen (syms[i]->name) + 1; | |
2820 | } | |
2821 | } | |
2822 | ||
2823 | s = *ret = bfd_malloc (size); | |
2824 | if (s == NULL) | |
2825 | { | |
2826 | free (syms); | |
2827 | free (relocs); | |
2828 | return 0; | |
2829 | } | |
2830 | ||
2831 | names = (char *) (s + count); | |
2832 | ||
2833 | for (i = 0, r = relocs; i < opdsymcount; ++i) | |
2834 | { | |
2835 | long lo, hi, mid; | |
2836 | asymbol *sym; | |
2837 | ||
2838 | while (r < relocs + relcount | |
2839 | && (*r)->address < syms[i]->value + opd->vma) | |
2840 | ++r; | |
2841 | ||
2842 | if (r == relocs + relcount) | |
2843 | continue; | |
2844 | ||
2845 | if ((*r)->address != syms[i]->value + opd->vma) | |
2846 | continue; | |
2847 | ||
2848 | if ((*r)->howto->type != (relocatable | |
2849 | ? R_PPC64_ADDR64 : R_PPC64_RELATIVE)) | |
2850 | continue; | |
2851 | ||
2852 | lo = opdsymcount; | |
2853 | hi = symcount; | |
2854 | sym = *((*r)->sym_ptr_ptr); | |
2855 | if (relocatable) | |
2856 | while (lo < hi) | |
2857 | { | |
2858 | mid = (lo + hi) >> 1; | |
2859 | if (syms[mid]->section->id < sym->section->id) | |
2860 | lo = mid + 1; | |
2861 | else if (syms[mid]->section->id > sym->section->id) | |
2862 | hi = mid; | |
2863 | else if (syms[mid]->value < sym->value + (*r)->addend) | |
2864 | lo = mid + 1; | |
2865 | else if (syms[mid]->value > sym->value + (*r)->addend) | |
2866 | hi = mid; | |
2867 | else | |
2868 | break; | |
2869 | } | |
2870 | else | |
2871 | while (lo < hi) | |
2872 | { | |
2873 | mid = (lo + hi) >> 1; | |
2874 | if (syms[mid]->value + syms[mid]->section->vma < (*r)->addend) | |
2875 | lo = mid + 1; | |
2876 | else if (syms[mid]->value + syms[mid]->section->vma > (*r)->addend) | |
2877 | hi = mid; | |
2878 | else | |
2879 | break; | |
2880 | } | |
2881 | ||
2882 | if (lo >= hi) | |
2883 | { | |
2884 | size_t len; | |
2885 | ||
2886 | *s = *syms[i]; | |
2887 | ||
2888 | if (! relocatable) | |
2889 | { | |
2890 | asection *sec; | |
2891 | ||
2892 | s->section = &bfd_abs_section; | |
2893 | for (sec = abfd->sections; sec; sec = sec->next) | |
2894 | if ((sec->flags & (SEC_ALLOC | SEC_CODE)) | |
2895 | == (SEC_ALLOC | SEC_CODE) | |
2896 | && (*r)->addend >= sec->vma | |
2897 | && (*r)->addend < sec->vma + sec->size) | |
2898 | { | |
2899 | s->section = sec; | |
2900 | break; | |
2901 | } | |
2902 | s->value = (*r)->addend - sec->vma; | |
2903 | } | |
2904 | else | |
2905 | { | |
2906 | s->section = sym->section; | |
2907 | s->value = sym->value + (*r)->addend; | |
2908 | } | |
2909 | s->name = names; | |
2910 | len = strlen (syms[i]->name); | |
2911 | memcpy (names, syms[i]->name, len + 1); | |
2912 | names += len + 1; | |
2913 | s++; | |
2914 | } | |
2915 | } | |
2916 | ||
2917 | free (syms); | |
2918 | free (relocs); | |
2919 | return count; | |
2920 | } | |
2921 | ||
5bd4f169 | 2922 | \f |
65f38f15 AM |
2923 | /* The following functions are specific to the ELF linker, while |
2924 | functions above are used generally. Those named ppc64_elf_* are | |
2925 | called by the main ELF linker code. They appear in this file more | |
2926 | or less in the order in which they are called. eg. | |
2927 | ppc64_elf_check_relocs is called early in the link process, | |
2928 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
e86ce104 AM |
2929 | called. |
2930 | ||
2931 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
2932 | functions have both a function code symbol and a function descriptor | |
2933 | symbol. A call to foo in a relocatable object file looks like: | |
2934 | ||
2935 | . .text | |
2936 | . x: | |
2937 | . bl .foo | |
2938 | . nop | |
2939 | ||
2940 | The function definition in another object file might be: | |
2941 | ||
2942 | . .section .opd | |
2943 | . foo: .quad .foo | |
2944 | . .quad .TOC.@tocbase | |
2945 | . .quad 0 | |
2946 | . | |
2947 | . .text | |
2948 | . .foo: blr | |
2949 | ||
2950 | When the linker resolves the call during a static link, the branch | |
2951 | unsurprisingly just goes to .foo and the .opd information is unused. | |
2952 | If the function definition is in a shared library, things are a little | |
2953 | different: The call goes via a plt call stub, the opd information gets | |
2954 | copied to the plt, and the linker patches the nop. | |
2955 | ||
2956 | . x: | |
2957 | . bl .foo_stub | |
2958 | . ld 2,40(1) | |
2959 | . | |
2960 | . | |
2961 | . .foo_stub: | |
2962 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
411e1bfb | 2963 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
e86ce104 AM |
2964 | . std 2,40(1) # this is the general idea |
2965 | . ld 11,0(12) | |
2966 | . ld 2,8(12) | |
2967 | . mtctr 11 | |
2968 | . ld 11,16(12) | |
2969 | . bctr | |
2970 | . | |
2971 | . .section .plt | |
2972 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
2973 | ||
2974 | The "reloc ()" notation is supposed to indicate that the linker emits | |
2975 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
2976 | copying. | |
2977 | ||
2978 | What are the difficulties here? Well, firstly, the relocations | |
2979 | examined by the linker in check_relocs are against the function code | |
2980 | sym .foo, while the dynamic relocation in the plt is emitted against | |
2981 | the function descriptor symbol, foo. Somewhere along the line, we need | |
2982 | to carefully copy dynamic link information from one symbol to the other. | |
2983 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
2984 | symbol as is normal for most other backends. We need foo dynamic | |
2985 | instead, at least for an application final link. However, when | |
2986 | creating a shared library containing foo, we need to have both symbols | |
2987 | dynamic so that references to .foo are satisfied during the early | |
2988 | stages of linking. Otherwise the linker might decide to pull in a | |
8387904d AM |
2989 | definition from some other object, eg. a static library. |
2990 | ||
2991 | Update: As of August 2004, we support a new convention. Function | |
2992 | calls may use the function descriptor symbol, ie. "bl foo". This | |
2993 | behaves exactly as "bl .foo". */ | |
65f38f15 AM |
2994 | |
2995 | /* The linker needs to keep track of the number of relocs that it | |
2996 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
2997 | This is so that it can later discard them if they are found to be | |
2998 | unnecessary. We store the information in a field extending the | |
2999 | regular ELF linker hash table. */ | |
3000 | ||
3001 | struct ppc_dyn_relocs | |
3002 | { | |
3003 | struct ppc_dyn_relocs *next; | |
3004 | ||
3005 | /* The input section of the reloc. */ | |
3006 | asection *sec; | |
3007 | ||
3008 | /* Total number of relocs copied for the input section. */ | |
3009 | bfd_size_type count; | |
3010 | ||
3011 | /* Number of pc-relative relocs copied for the input section. */ | |
3012 | bfd_size_type pc_count; | |
3013 | }; | |
3014 | ||
411e1bfb AM |
3015 | /* Track GOT entries needed for a given symbol. We might need more |
3016 | than one got entry per symbol. */ | |
3017 | struct got_entry | |
3018 | { | |
3019 | struct got_entry *next; | |
3020 | ||
e7b938ca | 3021 | /* The symbol addend that we'll be placing in the GOT. */ |
411e1bfb AM |
3022 | bfd_vma addend; |
3023 | ||
e717da7e AM |
3024 | /* Unlike other ELF targets, we use separate GOT entries for the same |
3025 | symbol referenced from different input files. This is to support | |
3026 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
3027 | from one input file to another. | |
3028 | ||
3029 | Point to the BFD owning this GOT entry. */ | |
3030 | bfd *owner; | |
3031 | ||
3032 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
3033 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
3034 | char tls_type; | |
3035 | ||
e7b938ca | 3036 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
411e1bfb AM |
3037 | union |
3038 | { | |
3039 | bfd_signed_vma refcount; | |
3040 | bfd_vma offset; | |
3041 | } got; | |
411e1bfb AM |
3042 | }; |
3043 | ||
3044 | /* The same for PLT. */ | |
3045 | struct plt_entry | |
3046 | { | |
3047 | struct plt_entry *next; | |
3048 | ||
3049 | bfd_vma addend; | |
3050 | ||
3051 | union | |
3052 | { | |
3053 | bfd_signed_vma refcount; | |
3054 | bfd_vma offset; | |
3055 | } plt; | |
3056 | }; | |
3057 | ||
65f38f15 | 3058 | /* Of those relocs that might be copied as dynamic relocs, this macro |
58ac9f71 AM |
3059 | selects those that must be copied when linking a shared library, |
3060 | even when the symbol is local. */ | |
65f38f15 | 3061 | |
411e1bfb | 3062 | #define MUST_BE_DYN_RELOC(RTYPE) \ |
805fc799 AM |
3063 | ((RTYPE) != R_PPC64_REL32 \ |
3064 | && (RTYPE) != R_PPC64_REL64 \ | |
04c9666a | 3065 | && (RTYPE) != R_PPC64_REL30) |
65f38f15 | 3066 | |
f4656909 AM |
3067 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
3068 | copying dynamic variables from a shared lib into an app's dynbss | |
3069 | section, and instead use a dynamic relocation to point into the | |
5d35169e AM |
3070 | shared lib. With code that gcc generates, it's vital that this be |
3071 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
3072 | the address of a function descriptor, which resides in the .opd | |
3073 | section. gcc uses the descriptor directly rather than going via the | |
3074 | GOT as some other ABI's do, which means that initialized function | |
3075 | pointers must reference the descriptor. Thus, a function pointer | |
3076 | initialized to the address of a function in a shared library will | |
3077 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
4cc11e76 | 3078 | redefines the function descriptor symbol to point to the copy. This |
5d35169e AM |
3079 | presents a problem as a plt entry for that function is also |
3080 | initialized from the function descriptor symbol and the copy reloc | |
3081 | may not be initialized first. */ | |
a23b6845 | 3082 | #define ELIMINATE_COPY_RELOCS 1 |
f4656909 | 3083 | |
721956f4 AM |
3084 | /* Section name for stubs is the associated section name plus this |
3085 | string. */ | |
3086 | #define STUB_SUFFIX ".stub" | |
3087 | ||
3088 | /* Linker stubs. | |
3089 | ppc_stub_long_branch: | |
3090 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
3091 | destination, but a 24 bit branch in a stub section will reach. | |
3092 | . b dest | |
3093 | ||
3094 | ppc_stub_plt_branch: | |
3095 | Similar to the above, but a 24 bit branch in the stub section won't | |
3096 | reach its destination. | |
87e226ce AM |
3097 | . addis %r12,%r2,xxx@toc@ha |
3098 | . ld %r11,xxx@toc@l(%r12) | |
721956f4 AM |
3099 | . mtctr %r11 |
3100 | . bctr | |
3101 | ||
3102 | ppc_stub_plt_call: | |
2c66dc6c AM |
3103 | Used to call a function in a shared library. If it so happens that |
3104 | the plt entry referenced crosses a 64k boundary, then an extra | |
3105 | "addis %r12,%r12,1" will be inserted before the load at xxx+8 or | |
3106 | xxx+16 as appropriate. | |
87e226ce | 3107 | . addis %r12,%r2,xxx@toc@ha |
721956f4 | 3108 | . std %r2,40(%r1) |
87e226ce AM |
3109 | . ld %r11,xxx+0@toc@l(%r12) |
3110 | . ld %r2,xxx+8@toc@l(%r12) | |
721956f4 | 3111 | . mtctr %r11 |
87e226ce | 3112 | . ld %r11,xxx+16@toc@l(%r12) |
721956f4 | 3113 | . bctr |
ad8e1ba5 AM |
3114 | |
3115 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
3116 | code to adjust the value and save r2 to support multiple toc sections. | |
3117 | A ppc_stub_long_branch with an r2 offset looks like: | |
3118 | . std %r2,40(%r1) | |
3119 | . addis %r2,%r2,off@ha | |
3120 | . addi %r2,%r2,off@l | |
3121 | . b dest | |
3122 | ||
3123 | A ppc_stub_plt_branch with an r2 offset looks like: | |
3124 | . std %r2,40(%r1) | |
3125 | . addis %r12,%r2,xxx@toc@ha | |
3126 | . ld %r11,xxx@toc@l(%r12) | |
3127 | . addis %r2,%r2,off@ha | |
3128 | . addi %r2,%r2,off@l | |
3129 | . mtctr %r11 | |
3130 | . bctr | |
721956f4 AM |
3131 | */ |
3132 | ||
3133 | enum ppc_stub_type { | |
3134 | ppc_stub_none, | |
3135 | ppc_stub_long_branch, | |
ad8e1ba5 | 3136 | ppc_stub_long_branch_r2off, |
721956f4 | 3137 | ppc_stub_plt_branch, |
ad8e1ba5 | 3138 | ppc_stub_plt_branch_r2off, |
721956f4 AM |
3139 | ppc_stub_plt_call |
3140 | }; | |
3141 | ||
3142 | struct ppc_stub_hash_entry { | |
3143 | ||
3144 | /* Base hash table entry structure. */ | |
3145 | struct bfd_hash_entry root; | |
3146 | ||
ad8e1ba5 AM |
3147 | enum ppc_stub_type stub_type; |
3148 | ||
721956f4 AM |
3149 | /* The stub section. */ |
3150 | asection *stub_sec; | |
3151 | ||
3152 | /* Offset within stub_sec of the beginning of this stub. */ | |
3153 | bfd_vma stub_offset; | |
3154 | ||
3155 | /* Given the symbol's value and its section we can determine its final | |
3156 | value when building the stubs (so the stub knows where to jump. */ | |
3157 | bfd_vma target_value; | |
3158 | asection *target_section; | |
3159 | ||
721956f4 AM |
3160 | /* The symbol table entry, if any, that this was derived from. */ |
3161 | struct ppc_link_hash_entry *h; | |
3162 | ||
411e1bfb AM |
3163 | /* And the reloc addend that this was derived from. */ |
3164 | bfd_vma addend; | |
3165 | ||
721956f4 AM |
3166 | /* Where this stub is being called from, or, in the case of combined |
3167 | stub sections, the first input section in the group. */ | |
3168 | asection *id_sec; | |
3169 | }; | |
3170 | ||
3171 | struct ppc_branch_hash_entry { | |
3172 | ||
3173 | /* Base hash table entry structure. */ | |
3174 | struct bfd_hash_entry root; | |
3175 | ||
3176 | /* Offset within .branch_lt. */ | |
3177 | unsigned int offset; | |
3178 | ||
3179 | /* Generation marker. */ | |
3180 | unsigned int iter; | |
3181 | }; | |
65f38f15 AM |
3182 | |
3183 | struct ppc_link_hash_entry | |
3184 | { | |
3185 | struct elf_link_hash_entry elf; | |
3186 | ||
721956f4 AM |
3187 | /* A pointer to the most recently used stub hash entry against this |
3188 | symbol. */ | |
3189 | struct ppc_stub_hash_entry *stub_cache; | |
3190 | ||
65f38f15 AM |
3191 | /* Track dynamic relocs copied for this symbol. */ |
3192 | struct ppc_dyn_relocs *dyn_relocs; | |
e86ce104 | 3193 | |
721956f4 | 3194 | /* Link between function code and descriptor symbols. */ |
34814b9f | 3195 | struct ppc_link_hash_entry *oh; |
721956f4 | 3196 | |
e86ce104 AM |
3197 | /* Flag function code and descriptor symbols. */ |
3198 | unsigned int is_func:1; | |
3199 | unsigned int is_func_descriptor:1; | |
411e1bfb | 3200 | |
8843416a AM |
3201 | /* Whether global opd sym has been adjusted or not. |
3202 | After ppc64_elf_edit_opd has run, this flag should be set for all | |
3203 | globals defined in any opd section. */ | |
754021d0 AM |
3204 | unsigned int adjust_done:1; |
3205 | ||
99877b66 AM |
3206 | /* Set if we twiddled this symbol to weak at some stage. */ |
3207 | unsigned int was_undefined:1; | |
3208 | ||
411e1bfb | 3209 | /* Contexts in which symbol is used in the GOT (or TOC). |
e7b938ca AM |
3210 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
3211 | corresponding relocs are encountered during check_relocs. | |
3212 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
3213 | indicate the corresponding GOT entry type is not needed. | |
3214 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
3215 | a TPREL one. We use a separate flag rather than setting TPREL | |
3216 | just for convenience in distinguishing the two cases. */ | |
3217 | #define TLS_GD 1 /* GD reloc. */ | |
3218 | #define TLS_LD 2 /* LD reloc. */ | |
3219 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
3220 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
3221 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
3222 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
3223 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
3224 | char tls_mask; | |
65f38f15 AM |
3225 | }; |
3226 | ||
3227 | /* ppc64 ELF linker hash table. */ | |
3228 | ||
3229 | struct ppc_link_hash_table | |
3230 | { | |
3231 | struct elf_link_hash_table elf; | |
3232 | ||
721956f4 AM |
3233 | /* The stub hash table. */ |
3234 | struct bfd_hash_table stub_hash_table; | |
3235 | ||
3236 | /* Another hash table for plt_branch stubs. */ | |
3237 | struct bfd_hash_table branch_hash_table; | |
3238 | ||
3239 | /* Linker stub bfd. */ | |
3240 | bfd *stub_bfd; | |
3241 | ||
3242 | /* Linker call-backs. */ | |
4ce794b7 AM |
3243 | asection * (*add_stub_section) (const char *, asection *); |
3244 | void (*layout_sections_again) (void); | |
721956f4 AM |
3245 | |
3246 | /* Array to keep track of which stub sections have been created, and | |
3247 | information on stub grouping. */ | |
3248 | struct map_stub { | |
3249 | /* This is the section to which stubs in the group will be attached. */ | |
3250 | asection *link_sec; | |
3251 | /* The stub section. */ | |
3252 | asection *stub_sec; | |
ad8e1ba5 AM |
3253 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
3254 | bfd_vma toc_off; | |
721956f4 AM |
3255 | } *stub_group; |
3256 | ||
ad8e1ba5 AM |
3257 | /* Temp used when calculating TOC pointers. */ |
3258 | bfd_vma toc_curr; | |
3259 | ||
8f3bab57 AM |
3260 | /* Highest input section id. */ |
3261 | int top_id; | |
3262 | ||
734b6cf9 AM |
3263 | /* Highest output section index. */ |
3264 | int top_index; | |
3265 | ||
3266 | /* List of input sections for each output section. */ | |
3267 | asection **input_list; | |
721956f4 | 3268 | |
65f38f15 | 3269 | /* Short-cuts to get to dynamic linker sections. */ |
4ce794b7 | 3270 | asection *got; |
4ce794b7 AM |
3271 | asection *plt; |
3272 | asection *relplt; | |
3273 | asection *dynbss; | |
3274 | asection *relbss; | |
3275 | asection *glink; | |
82bd7b59 | 3276 | asection *sfpr; |
4ce794b7 AM |
3277 | asection *brlt; |
3278 | asection *relbrlt; | |
ec338859 | 3279 | |
8387904d AM |
3280 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
3281 | struct ppc_link_hash_entry *tls_get_addr; | |
3282 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
411e1bfb | 3283 | |
9b5ecbd0 AM |
3284 | /* Statistics. */ |
3285 | unsigned long stub_count[ppc_stub_plt_call]; | |
3286 | ||
ad8e1ba5 | 3287 | /* Set if we should emit symbols for stubs. */ |
99877b66 | 3288 | unsigned int emit_stub_syms:1; |
ad8e1ba5 | 3289 | |
5d1634d7 | 3290 | /* Set on error. */ |
99877b66 | 3291 | unsigned int stub_error:1; |
721956f4 AM |
3292 | |
3293 | /* Flag set when small branches are detected. Used to | |
3294 | select suitable defaults for the stub group size. */ | |
99877b66 AM |
3295 | unsigned int has_14bit_branch:1; |
3296 | ||
3297 | /* Temp used by ppc64_elf_check_directives. */ | |
3298 | unsigned int twiddled_syms:1; | |
721956f4 AM |
3299 | |
3300 | /* Incremented every time we size stubs. */ | |
3301 | unsigned int stub_iteration; | |
5d1634d7 | 3302 | |
ec338859 AM |
3303 | /* Small local sym to section mapping cache. */ |
3304 | struct sym_sec_cache sym_sec; | |
65f38f15 AM |
3305 | }; |
3306 | ||
3307 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ | |
3308 | ||
3309 | #define ppc_hash_table(p) \ | |
3310 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
3311 | ||
721956f4 AM |
3312 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
3313 | ((struct ppc_stub_hash_entry *) \ | |
3314 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3315 | ||
3316 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
3317 | ((struct ppc_branch_hash_entry *) \ | |
3318 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
3319 | ||
3320 | /* Create an entry in the stub hash table. */ | |
3321 | ||
3322 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3323 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
3324 | struct bfd_hash_table *table, | |
3325 | const char *string) | |
721956f4 AM |
3326 | { |
3327 | /* Allocate the structure if it has not already been allocated by a | |
3328 | subclass. */ | |
3329 | if (entry == NULL) | |
3330 | { | |
3331 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
3332 | if (entry == NULL) | |
3333 | return entry; | |
3334 | } | |
3335 | ||
3336 | /* Call the allocation method of the superclass. */ | |
3337 | entry = bfd_hash_newfunc (entry, table, string); | |
3338 | if (entry != NULL) | |
3339 | { | |
3340 | struct ppc_stub_hash_entry *eh; | |
3341 | ||
3342 | /* Initialize the local fields. */ | |
3343 | eh = (struct ppc_stub_hash_entry *) entry; | |
ad8e1ba5 | 3344 | eh->stub_type = ppc_stub_none; |
721956f4 AM |
3345 | eh->stub_sec = NULL; |
3346 | eh->stub_offset = 0; | |
3347 | eh->target_value = 0; | |
3348 | eh->target_section = NULL; | |
721956f4 AM |
3349 | eh->h = NULL; |
3350 | eh->id_sec = NULL; | |
3351 | } | |
3352 | ||
3353 | return entry; | |
3354 | } | |
3355 | ||
3356 | /* Create an entry in the branch hash table. */ | |
3357 | ||
3358 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3359 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
3360 | struct bfd_hash_table *table, | |
3361 | const char *string) | |
721956f4 AM |
3362 | { |
3363 | /* Allocate the structure if it has not already been allocated by a | |
3364 | subclass. */ | |
3365 | if (entry == NULL) | |
3366 | { | |
3367 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
3368 | if (entry == NULL) | |
3369 | return entry; | |
3370 | } | |
3371 | ||
3372 | /* Call the allocation method of the superclass. */ | |
3373 | entry = bfd_hash_newfunc (entry, table, string); | |
3374 | if (entry != NULL) | |
3375 | { | |
3376 | struct ppc_branch_hash_entry *eh; | |
3377 | ||
3378 | /* Initialize the local fields. */ | |
3379 | eh = (struct ppc_branch_hash_entry *) entry; | |
3380 | eh->offset = 0; | |
3381 | eh->iter = 0; | |
3382 | } | |
3383 | ||
3384 | return entry; | |
3385 | } | |
3386 | ||
65f38f15 AM |
3387 | /* Create an entry in a ppc64 ELF linker hash table. */ |
3388 | ||
3389 | static struct bfd_hash_entry * | |
4ce794b7 AM |
3390 | link_hash_newfunc (struct bfd_hash_entry *entry, |
3391 | struct bfd_hash_table *table, | |
3392 | const char *string) | |
65f38f15 AM |
3393 | { |
3394 | /* Allocate the structure if it has not already been allocated by a | |
3395 | subclass. */ | |
3396 | if (entry == NULL) | |
3397 | { | |
3398 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
3399 | if (entry == NULL) | |
3400 | return entry; | |
3401 | } | |
3402 | ||
3403 | /* Call the allocation method of the superclass. */ | |
3404 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
3405 | if (entry != NULL) | |
3406 | { | |
3407 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
3408 | ||
721956f4 | 3409 | eh->stub_cache = NULL; |
65f38f15 | 3410 | eh->dyn_relocs = NULL; |
721956f4 | 3411 | eh->oh = NULL; |
e86ce104 AM |
3412 | eh->is_func = 0; |
3413 | eh->is_func_descriptor = 0; | |
754021d0 | 3414 | eh->adjust_done = 0; |
99877b66 | 3415 | eh->was_undefined = 0; |
e7b938ca | 3416 | eh->tls_mask = 0; |
65f38f15 AM |
3417 | } |
3418 | ||
3419 | return entry; | |
3420 | } | |
3421 | ||
3422 | /* Create a ppc64 ELF linker hash table. */ | |
3423 | ||
3424 | static struct bfd_link_hash_table * | |
4ce794b7 | 3425 | ppc64_elf_link_hash_table_create (bfd *abfd) |
65f38f15 AM |
3426 | { |
3427 | struct ppc_link_hash_table *htab; | |
3428 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
3429 | ||
4ce794b7 | 3430 | htab = bfd_zmalloc (amt); |
65f38f15 AM |
3431 | if (htab == NULL) |
3432 | return NULL; | |
3433 | ||
3434 | if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc)) | |
3435 | { | |
e2d34d7d | 3436 | free (htab); |
65f38f15 AM |
3437 | return NULL; |
3438 | } | |
3439 | ||
721956f4 AM |
3440 | /* Init the stub hash table too. */ |
3441 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc)) | |
3442 | return NULL; | |
3443 | ||
3444 | /* And the branch hash table. */ | |
3445 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc)) | |
3446 | return NULL; | |
3447 | ||
3254fd24 AM |
3448 | /* Initializing two fields of the union is just cosmetic. We really |
3449 | only care about glist, but when compiled on a 32-bit host the | |
3450 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
3451 | debugger inspection of these fields look nicer. */ | |
3452 | htab->elf.init_refcount.refcount = 0; | |
3453 | htab->elf.init_refcount.glist = NULL; | |
3454 | htab->elf.init_offset.offset = 0; | |
3455 | htab->elf.init_offset.glist = NULL; | |
3456 | ||
65f38f15 AM |
3457 | return &htab->elf.root; |
3458 | } | |
3459 | ||
721956f4 AM |
3460 | /* Free the derived linker hash table. */ |
3461 | ||
3462 | static void | |
4ce794b7 | 3463 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
721956f4 AM |
3464 | { |
3465 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
3466 | ||
3467 | bfd_hash_table_free (&ret->stub_hash_table); | |
3468 | bfd_hash_table_free (&ret->branch_hash_table); | |
3469 | _bfd_generic_link_hash_table_free (hash); | |
3470 | } | |
3471 | ||
e717da7e AM |
3472 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
3473 | ||
3474 | void | |
3475 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
3476 | { | |
3477 | struct ppc_link_hash_table *htab; | |
3478 | ||
3479 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
3480 | ||
3481 | /* Always hook our dynamic sections into the first bfd, which is the | |
3482 | linker created stub bfd. This ensures that the GOT header is at | |
3483 | the start of the output TOC section. */ | |
3484 | htab = ppc_hash_table (info); | |
3485 | htab->stub_bfd = abfd; | |
3486 | htab->elf.dynobj = abfd; | |
3487 | } | |
3488 | ||
721956f4 AM |
3489 | /* Build a name for an entry in the stub hash table. */ |
3490 | ||
3491 | static char * | |
4ce794b7 AM |
3492 | ppc_stub_name (const asection *input_section, |
3493 | const asection *sym_sec, | |
3494 | const struct ppc_link_hash_entry *h, | |
3495 | const Elf_Internal_Rela *rel) | |
721956f4 AM |
3496 | { |
3497 | char *stub_name; | |
3498 | bfd_size_type len; | |
3499 | ||
3500 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
3501 | offsets from a sym as a branch target? In fact, we could | |
3502 | probably assume the addend is always zero. */ | |
3503 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
3504 | ||
3505 | if (h) | |
3506 | { | |
3507 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
3508 | stub_name = bfd_malloc (len); | |
3509 | if (stub_name != NULL) | |
3510 | { | |
97b639ba | 3511 | sprintf (stub_name, "%08x.%s+%x", |
721956f4 AM |
3512 | input_section->id & 0xffffffff, |
3513 | h->elf.root.root.string, | |
3514 | (int) rel->r_addend & 0xffffffff); | |
3515 | } | |
3516 | } | |
3517 | else | |
3518 | { | |
ad8e1ba5 | 3519 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
721956f4 AM |
3520 | stub_name = bfd_malloc (len); |
3521 | if (stub_name != NULL) | |
3522 | { | |
97b639ba | 3523 | sprintf (stub_name, "%08x.%x:%x+%x", |
721956f4 AM |
3524 | input_section->id & 0xffffffff, |
3525 | sym_sec->id & 0xffffffff, | |
3526 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
3527 | (int) rel->r_addend & 0xffffffff); | |
3528 | } | |
3529 | } | |
3530 | return stub_name; | |
3531 | } | |
3532 | ||
3533 | /* Look up an entry in the stub hash. Stub entries are cached because | |
3534 | creating the stub name takes a bit of time. */ | |
3535 | ||
3536 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3537 | ppc_get_stub_entry (const asection *input_section, |
3538 | const asection *sym_sec, | |
039b3fef | 3539 | struct ppc_link_hash_entry *h, |
4ce794b7 AM |
3540 | const Elf_Internal_Rela *rel, |
3541 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3542 | { |
3543 | struct ppc_stub_hash_entry *stub_entry; | |
721956f4 AM |
3544 | const asection *id_sec; |
3545 | ||
3546 | /* If this input section is part of a group of sections sharing one | |
3547 | stub section, then use the id of the first section in the group. | |
3548 | Stub names need to include a section id, as there may well be | |
3549 | more than one stub used to reach say, printf, and we need to | |
3550 | distinguish between them. */ | |
3551 | id_sec = htab->stub_group[input_section->id].link_sec; | |
3552 | ||
3553 | if (h != NULL && h->stub_cache != NULL | |
3554 | && h->stub_cache->h == h | |
3555 | && h->stub_cache->id_sec == id_sec) | |
3556 | { | |
3557 | stub_entry = h->stub_cache; | |
3558 | } | |
3559 | else | |
3560 | { | |
3561 | char *stub_name; | |
3562 | ||
3563 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
3564 | if (stub_name == NULL) | |
3565 | return NULL; | |
3566 | ||
3567 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 3568 | stub_name, FALSE, FALSE); |
721956f4 AM |
3569 | if (h != NULL) |
3570 | h->stub_cache = stub_entry; | |
3571 | ||
3572 | free (stub_name); | |
3573 | } | |
3574 | ||
3575 | return stub_entry; | |
3576 | } | |
3577 | ||
3578 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
3579 | stub entry are initialised. */ | |
3580 | ||
3581 | static struct ppc_stub_hash_entry * | |
4ce794b7 AM |
3582 | ppc_add_stub (const char *stub_name, |
3583 | asection *section, | |
3584 | struct ppc_link_hash_table *htab) | |
721956f4 AM |
3585 | { |
3586 | asection *link_sec; | |
3587 | asection *stub_sec; | |
3588 | struct ppc_stub_hash_entry *stub_entry; | |
3589 | ||
3590 | link_sec = htab->stub_group[section->id].link_sec; | |
3591 | stub_sec = htab->stub_group[section->id].stub_sec; | |
3592 | if (stub_sec == NULL) | |
3593 | { | |
3594 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
3595 | if (stub_sec == NULL) | |
3596 | { | |
d4c88bbb | 3597 | size_t namelen; |
721956f4 AM |
3598 | bfd_size_type len; |
3599 | char *s_name; | |
3600 | ||
d4c88bbb AM |
3601 | namelen = strlen (link_sec->name); |
3602 | len = namelen + sizeof (STUB_SUFFIX); | |
721956f4 AM |
3603 | s_name = bfd_alloc (htab->stub_bfd, len); |
3604 | if (s_name == NULL) | |
3605 | return NULL; | |
3606 | ||
d4c88bbb AM |
3607 | memcpy (s_name, link_sec->name, namelen); |
3608 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
721956f4 AM |
3609 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
3610 | if (stub_sec == NULL) | |
3611 | return NULL; | |
3612 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
3613 | } | |
3614 | htab->stub_group[section->id].stub_sec = stub_sec; | |
3615 | } | |
3616 | ||
3617 | /* Enter this entry into the linker stub hash table. */ | |
3618 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
b34976b6 | 3619 | TRUE, FALSE); |
721956f4 AM |
3620 | if (stub_entry == NULL) |
3621 | { | |
d003868e AM |
3622 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
3623 | section->owner, stub_name); | |
721956f4 AM |
3624 | return NULL; |
3625 | } | |
3626 | ||
3627 | stub_entry->stub_sec = stub_sec; | |
3628 | stub_entry->stub_offset = 0; | |
3629 | stub_entry->id_sec = link_sec; | |
3630 | return stub_entry; | |
3631 | } | |
3632 | ||
82bd7b59 AM |
3633 | /* Create sections for linker generated code. */ |
3634 | ||
b34976b6 | 3635 | static bfd_boolean |
4ce794b7 | 3636 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
82bd7b59 AM |
3637 | { |
3638 | struct ppc_link_hash_table *htab; | |
3639 | flagword flags; | |
3640 | ||
3641 | htab = ppc_hash_table (info); | |
3642 | ||
3643 | /* Create .sfpr for code to save and restore fp regs. */ | |
3644 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
3645 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
721956f4 | 3646 | htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr"); |
82bd7b59 AM |
3647 | if (htab->sfpr == NULL |
3648 | || ! bfd_set_section_flags (dynobj, htab->sfpr, flags) | |
3649 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
b34976b6 | 3650 | return FALSE; |
82bd7b59 | 3651 | |
721956f4 | 3652 | /* Create .glink for lazy dynamic linking support. */ |
4ce794b7 AM |
3653 | htab->glink = bfd_make_section_anyway (dynobj, ".glink"); |
3654 | if (htab->glink == NULL | |
3655 | || ! bfd_set_section_flags (dynobj, htab->glink, flags) | |
3656 | || ! bfd_set_section_alignment (dynobj, htab->glink, 2)) | |
b34976b6 | 3657 | return FALSE; |
82bd7b59 | 3658 | |
721956f4 AM |
3659 | /* Create .branch_lt for plt_branch stubs. */ |
3660 | flags = (SEC_ALLOC | SEC_LOAD | |
3661 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3662 | htab->brlt = bfd_make_section_anyway (dynobj, ".branch_lt"); |
3663 | if (htab->brlt == NULL | |
3664 | || ! bfd_set_section_flags (dynobj, htab->brlt, flags) | |
3665 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
b34976b6 | 3666 | return FALSE; |
721956f4 AM |
3667 | |
3668 | if (info->shared) | |
3669 | { | |
3670 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
3671 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4ce794b7 AM |
3672 | htab->relbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt"); |
3673 | if (!htab->relbrlt | |
3674 | || ! bfd_set_section_flags (dynobj, htab->relbrlt, flags) | |
3675 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
b34976b6 | 3676 | return FALSE; |
721956f4 | 3677 | } |
b34976b6 | 3678 | return TRUE; |
82bd7b59 AM |
3679 | } |
3680 | ||
e717da7e AM |
3681 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
3682 | not already done. */ | |
65f38f15 | 3683 | |
b34976b6 | 3684 | static bfd_boolean |
e717da7e | 3685 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
65f38f15 | 3686 | { |
e717da7e AM |
3687 | asection *got, *relgot; |
3688 | flagword flags; | |
3689 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
65f38f15 | 3690 | |
4ce794b7 | 3691 | if (!htab->got) |
e717da7e AM |
3692 | { |
3693 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
3694 | return FALSE; | |
3695 | ||
3696 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
3697 | if (!htab->got) | |
3698 | abort (); | |
3699 | } | |
3700 | ||
3701 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3702 | | SEC_LINKER_CREATED); | |
3703 | ||
3704 | got = bfd_make_section (abfd, ".got"); | |
3705 | if (!got | |
3706 | || !bfd_set_section_flags (abfd, got, flags) | |
3707 | || !bfd_set_section_alignment (abfd, got, 3)) | |
3708 | return FALSE; | |
65f38f15 | 3709 | |
e717da7e AM |
3710 | relgot = bfd_make_section (abfd, ".rela.got"); |
3711 | if (!relgot | |
3712 | || ! bfd_set_section_flags (abfd, relgot, flags | SEC_READONLY) | |
3713 | || ! bfd_set_section_alignment (abfd, relgot, 3)) | |
b34976b6 | 3714 | return FALSE; |
e717da7e AM |
3715 | |
3716 | ppc64_elf_tdata (abfd)->got = got; | |
3717 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
b34976b6 | 3718 | return TRUE; |
65f38f15 | 3719 | } |
5bd4f169 | 3720 | |
82bd7b59 | 3721 | /* Create the dynamic sections, and set up shortcuts. */ |
5bd4f169 | 3722 | |
b34976b6 | 3723 | static bfd_boolean |
4ce794b7 | 3724 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
5bd4f169 | 3725 | { |
65f38f15 | 3726 | struct ppc_link_hash_table *htab; |
5bd4f169 | 3727 | |
65f38f15 | 3728 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
b34976b6 | 3729 | return FALSE; |
65f38f15 | 3730 | |
e717da7e AM |
3731 | htab = ppc_hash_table (info); |
3732 | if (!htab->got) | |
3733 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
4ce794b7 AM |
3734 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
3735 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
3736 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
65f38f15 | 3737 | if (!info->shared) |
4ce794b7 | 3738 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
65f38f15 | 3739 | |
e717da7e | 3740 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
4ce794b7 | 3741 | || (!info->shared && !htab->relbss)) |
65f38f15 AM |
3742 | abort (); |
3743 | ||
b34976b6 | 3744 | return TRUE; |
5bd4f169 AM |
3745 | } |
3746 | ||
65f38f15 AM |
3747 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
3748 | ||
3749 | static void | |
9c5bfbb7 AM |
3750 | ppc64_elf_copy_indirect_symbol |
3751 | (const struct elf_backend_data *bed ATTRIBUTE_UNUSED, | |
3752 | struct elf_link_hash_entry *dir, | |
3753 | struct elf_link_hash_entry *ind) | |
65f38f15 AM |
3754 | { |
3755 | struct ppc_link_hash_entry *edir, *eind; | |
81848ca0 | 3756 | flagword mask; |
65f38f15 AM |
3757 | |
3758 | edir = (struct ppc_link_hash_entry *) dir; | |
3759 | eind = (struct ppc_link_hash_entry *) ind; | |
3760 | ||
411e1bfb | 3761 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
bbd7ec4a | 3762 | if (eind->dyn_relocs != NULL) |
65f38f15 | 3763 | { |
bbd7ec4a AM |
3764 | if (edir->dyn_relocs != NULL) |
3765 | { | |
3766 | struct ppc_dyn_relocs **pp; | |
3767 | struct ppc_dyn_relocs *p; | |
3768 | ||
411e1bfb | 3769 | if (eind->elf.root.type == bfd_link_hash_indirect) |
bbd7ec4a AM |
3770 | abort (); |
3771 | ||
3772 | /* Add reloc counts against the weak sym to the strong sym | |
3773 | list. Merge any entries against the same section. */ | |
3774 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
3775 | { | |
3776 | struct ppc_dyn_relocs *q; | |
3777 | ||
3778 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3779 | if (q->sec == p->sec) | |
3780 | { | |
3781 | q->pc_count += p->pc_count; | |
3782 | q->count += p->count; | |
3783 | *pp = p->next; | |
3784 | break; | |
3785 | } | |
3786 | if (q == NULL) | |
3787 | pp = &p->next; | |
3788 | } | |
3789 | *pp = edir->dyn_relocs; | |
3790 | } | |
3791 | ||
65f38f15 AM |
3792 | edir->dyn_relocs = eind->dyn_relocs; |
3793 | eind->dyn_relocs = NULL; | |
3794 | } | |
65f38f15 | 3795 | |
6349e628 AM |
3796 | edir->is_func |= eind->is_func; |
3797 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
58ac9f71 | 3798 | edir->tls_mask |= eind->tls_mask; |
6349e628 | 3799 | |
81848ca0 | 3800 | mask = (ELF_LINK_HASH_REF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR |
3addb0a9 DJ |
3801 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | ELF_LINK_NON_GOT_REF |
3802 | | ELF_LINK_HASH_NEEDS_PLT); | |
81848ca0 AM |
3803 | /* If called to transfer flags for a weakdef during processing |
3804 | of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF. | |
3805 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
3806 | if (ELIMINATE_COPY_RELOCS | |
3807 | && eind->elf.root.type != bfd_link_hash_indirect | |
3808 | && (edir->elf.elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) != 0) | |
3809 | mask &= ~ELF_LINK_NON_GOT_REF; | |
3810 | ||
3811 | edir->elf.elf_link_hash_flags |= eind->elf.elf_link_hash_flags & mask; | |
6349e628 AM |
3812 | |
3813 | /* If we were called to copy over info for a weak sym, that's all. */ | |
3814 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
3815 | return; | |
3816 | ||
81848ca0 AM |
3817 | /* Copy over got entries that we may have already seen to the |
3818 | symbol which just became indirect. */ | |
411e1bfb AM |
3819 | if (eind->elf.got.glist != NULL) |
3820 | { | |
3821 | if (edir->elf.got.glist != NULL) | |
3822 | { | |
3823 | struct got_entry **entp; | |
3824 | struct got_entry *ent; | |
3825 | ||
3826 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
3827 | { | |
3828 | struct got_entry *dent; | |
3829 | ||
3830 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
3831 | if (dent->addend == ent->addend | |
e717da7e | 3832 | && dent->owner == ent->owner |
411e1bfb AM |
3833 | && dent->tls_type == ent->tls_type) |
3834 | { | |
3835 | dent->got.refcount += ent->got.refcount; | |
3836 | *entp = ent->next; | |
3837 | break; | |
3838 | } | |
3839 | if (dent == NULL) | |
3840 | entp = &ent->next; | |
3841 | } | |
3842 | *entp = edir->elf.got.glist; | |
3843 | } | |
3844 | ||
3845 | edir->elf.got.glist = eind->elf.got.glist; | |
3846 | eind->elf.got.glist = NULL; | |
3847 | } | |
3848 | ||
3849 | /* And plt entries. */ | |
3850 | if (eind->elf.plt.plist != NULL) | |
3851 | { | |
3852 | if (edir->elf.plt.plist != NULL) | |
3853 | { | |
3854 | struct plt_entry **entp; | |
3855 | struct plt_entry *ent; | |
3856 | ||
3857 | for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; ) | |
3858 | { | |
3859 | struct plt_entry *dent; | |
3860 | ||
3861 | for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next) | |
3862 | if (dent->addend == ent->addend) | |
3863 | { | |
3864 | dent->plt.refcount += ent->plt.refcount; | |
3865 | *entp = ent->next; | |
3866 | break; | |
3867 | } | |
3868 | if (dent == NULL) | |
3869 | entp = &ent->next; | |
3870 | } | |
3871 | *entp = edir->elf.plt.plist; | |
3872 | } | |
3873 | ||
3874 | edir->elf.plt.plist = eind->elf.plt.plist; | |
3875 | eind->elf.plt.plist = NULL; | |
3876 | } | |
3877 | ||
411e1bfb AM |
3878 | if (edir->elf.dynindx == -1) |
3879 | { | |
3880 | edir->elf.dynindx = eind->elf.dynindx; | |
3881 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
3882 | eind->elf.dynindx = -1; | |
3883 | eind->elf.dynstr_index = 0; | |
3884 | } | |
3885 | else | |
3886 | BFD_ASSERT (eind->elf.dynindx == -1); | |
3887 | } | |
3888 | ||
8387904d AM |
3889 | /* Find the function descriptor hash entry from the given function code |
3890 | hash entry FH. Link the entries via their OH fields. */ | |
3891 | ||
3892 | static struct ppc_link_hash_entry * | |
3893 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
3894 | { | |
3895 | struct ppc_link_hash_entry *fdh = fh->oh; | |
3896 | ||
3897 | if (fdh == NULL) | |
3898 | { | |
3899 | const char *fd_name = fh->elf.root.root.string + 1; | |
3900 | ||
3901 | fdh = (struct ppc_link_hash_entry *) | |
3902 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
3903 | if (fdh != NULL) | |
3904 | { | |
3905 | fdh->is_func_descriptor = 1; | |
3906 | fdh->oh = fh; | |
3907 | fh->is_func = 1; | |
3908 | fh->oh = fdh; | |
3909 | } | |
3910 | } | |
3911 | ||
3912 | return fdh; | |
3913 | } | |
3914 | ||
3915 | /* Hacks to support old ABI code. | |
3916 | When making function calls, old ABI code references function entry | |
3917 | points (dot symbols), while new ABI code references the function | |
3918 | descriptor symbol. We need to make any combination of reference and | |
3919 | definition work together, without breaking archive linking. | |
3920 | ||
3921 | For a defined function "foo" and an undefined call to "bar": | |
3922 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
3923 | "bar" too). | |
3924 | A new object defines "foo" and references "bar". | |
3925 | ||
3926 | A new object thus has no problem with its undefined symbols being | |
3927 | satisfied by definitions in an old object. On the other hand, the | |
3928 | old object won't have ".bar" satisfied by a new object. */ | |
3929 | ||
3930 | /* Fix function descriptor symbols defined in .opd sections to be | |
3931 | function type. */ | |
555cd476 AM |
3932 | |
3933 | static bfd_boolean | |
3934 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, | |
3935 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3936 | Elf_Internal_Sym *isym, | |
3937 | const char **name ATTRIBUTE_UNUSED, | |
3938 | flagword *flags ATTRIBUTE_UNUSED, | |
3939 | asection **sec, | |
3940 | bfd_vma *value ATTRIBUTE_UNUSED) | |
3941 | { | |
8843416a AM |
3942 | if (*sec != NULL |
3943 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
555cd476 AM |
3944 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
3945 | return TRUE; | |
3946 | } | |
3947 | ||
8387904d AM |
3948 | /* This function makes an old ABI object reference to ".bar" cause the |
3949 | inclusion of a new ABI object archive that defines "bar". */ | |
3950 | ||
3951 | static struct elf_link_hash_entry * | |
3952 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
3953 | struct bfd_link_info *info, | |
3954 | const char *name) | |
3955 | { | |
3956 | struct elf_link_hash_entry *h; | |
3957 | char *dot_name; | |
3958 | size_t len; | |
3959 | ||
3960 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
3961 | if (h != NULL) | |
3962 | return h; | |
3963 | ||
3964 | if (name[0] == '.') | |
3965 | return h; | |
3966 | ||
3967 | len = strlen (name); | |
3968 | dot_name = bfd_alloc (abfd, len + 2); | |
3969 | if (dot_name == NULL) | |
3970 | return (struct elf_link_hash_entry *) 0 - 1; | |
3971 | dot_name[0] = '.'; | |
3972 | memcpy (dot_name + 1, name, len + 1); | |
3973 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
3974 | bfd_release (abfd, dot_name); | |
3975 | return h; | |
3976 | } | |
3977 | ||
3978 | /* This function satisfies all old ABI object references to ".bar" if a | |
99877b66 AM |
3979 | new ABI object defines "bar". Well, at least, undefined dot symbols |
3980 | are made weak. This stops later archive searches from including an | |
3981 | object if we already have a function descriptor definition. It also | |
35b0ce59 AM |
3982 | prevents the linker complaining about undefined symbols. |
3983 | We also check and correct mismatched symbol visibility here. The | |
3984 | most restrictive visibility of the function descriptor and the | |
3985 | function entry symbol is used. */ | |
8387904d AM |
3986 | |
3987 | static bfd_boolean | |
3988 | add_symbol_adjust (struct elf_link_hash_entry *h, void *inf) | |
3989 | { | |
3990 | struct bfd_link_info *info; | |
3991 | struct ppc_link_hash_table *htab; | |
99877b66 | 3992 | struct ppc_link_hash_entry *eh; |
8387904d AM |
3993 | struct ppc_link_hash_entry *fdh; |
3994 | ||
3995 | if (h->root.type == bfd_link_hash_indirect) | |
3996 | return TRUE; | |
3997 | ||
3998 | if (h->root.type == bfd_link_hash_warning) | |
3999 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4000 | ||
35b0ce59 | 4001 | if (h->root.root.string[0] != '.') |
8387904d AM |
4002 | return TRUE; |
4003 | ||
4004 | info = inf; | |
4005 | htab = ppc_hash_table (info); | |
99877b66 AM |
4006 | eh = (struct ppc_link_hash_entry *) h; |
4007 | fdh = get_fdh (eh, htab); | |
8387904d AM |
4008 | if (fdh != NULL) |
4009 | { | |
35b0ce59 AM |
4010 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
4011 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
4012 | if (entry_vis < descr_vis) | |
4013 | fdh->elf.other += entry_vis - descr_vis; | |
4014 | else if (entry_vis > descr_vis) | |
4015 | eh->elf.other += descr_vis - entry_vis; | |
4016 | ||
4017 | if (eh->elf.root.type == bfd_link_hash_undefined) | |
4018 | { | |
4019 | eh->elf.root.type = bfd_link_hash_undefweak; | |
4020 | eh->was_undefined = 1; | |
4021 | htab->twiddled_syms = 1; | |
4022 | } | |
8387904d | 4023 | } |
99877b66 | 4024 | |
8387904d AM |
4025 | return TRUE; |
4026 | } | |
4027 | ||
4028 | static bfd_boolean | |
4029 | ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED, | |
4030 | struct bfd_link_info *info) | |
4031 | { | |
99877b66 | 4032 | struct ppc_link_hash_table *htab; |
35b0ce59 AM |
4033 | extern const bfd_target bfd_elf64_powerpc_vec; |
4034 | extern const bfd_target bfd_elf64_powerpcle_vec; | |
99877b66 AM |
4035 | |
4036 | htab = ppc_hash_table (info); | |
35b0ce59 AM |
4037 | if (htab->elf.root.creator != &bfd_elf64_powerpc_vec |
4038 | && htab->elf.root.creator != &bfd_elf64_powerpcle_vec) | |
4039 | return TRUE; | |
4040 | ||
8387904d | 4041 | elf_link_hash_traverse (&htab->elf, add_symbol_adjust, info); |
99877b66 AM |
4042 | |
4043 | /* We need to fix the undefs list for any syms we have twiddled to | |
4044 | undef_weak. */ | |
4045 | if (htab->twiddled_syms) | |
4046 | { | |
4047 | struct bfd_link_hash_entry **pun; | |
4048 | ||
4049 | pun = &htab->elf.root.undefs; | |
4050 | while (*pun != NULL) | |
4051 | { | |
4052 | struct bfd_link_hash_entry *h = *pun; | |
4053 | ||
4054 | if (h->type != bfd_link_hash_undefined | |
4055 | && h->type != bfd_link_hash_common) | |
4056 | { | |
4057 | *pun = h->und_next; | |
4058 | h->und_next = NULL; | |
4059 | if (h == htab->elf.root.undefs_tail) | |
4060 | { | |
4061 | if (pun == &htab->elf.root.undefs) | |
4062 | htab->elf.root.undefs_tail = NULL; | |
4063 | else | |
4064 | /* pun points at an und_next field. Go back to | |
4065 | the start of the link_hash_entry. */ | |
4066 | htab->elf.root.undefs_tail = (struct bfd_link_hash_entry *) | |
4067 | ((char *) pun - ((char *) &h->und_next - (char *) h)); | |
4068 | break; | |
4069 | } | |
4070 | } | |
4071 | else | |
4072 | pun = &h->und_next; | |
4073 | } | |
4074 | ||
4075 | htab->twiddled_syms = 0; | |
4076 | } | |
8387904d AM |
4077 | return TRUE; |
4078 | } | |
4079 | ||
411e1bfb | 4080 | static bfd_boolean |
4ce794b7 AM |
4081 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
4082 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
411e1bfb AM |
4083 | { |
4084 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
e7b938ca | 4085 | char *local_got_tls_masks; |
411e1bfb AM |
4086 | |
4087 | if (local_got_ents == NULL) | |
4088 | { | |
4089 | bfd_size_type size = symtab_hdr->sh_info; | |
4090 | ||
e7b938ca | 4091 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
4ce794b7 | 4092 | local_got_ents = bfd_zalloc (abfd, size); |
411e1bfb AM |
4093 | if (local_got_ents == NULL) |
4094 | return FALSE; | |
4095 | elf_local_got_ents (abfd) = local_got_ents; | |
4096 | } | |
4097 | ||
4098 | if ((tls_type & TLS_EXPLICIT) == 0) | |
4099 | { | |
4100 | struct got_entry *ent; | |
4101 | ||
4102 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
e717da7e AM |
4103 | if (ent->addend == r_addend |
4104 | && ent->owner == abfd | |
4105 | && ent->tls_type == tls_type) | |
411e1bfb AM |
4106 | break; |
4107 | if (ent == NULL) | |
4108 | { | |
4109 | bfd_size_type amt = sizeof (*ent); | |
4ce794b7 | 4110 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4111 | if (ent == NULL) |
4112 | return FALSE; | |
4113 | ent->next = local_got_ents[r_symndx]; | |
4114 | ent->addend = r_addend; | |
e717da7e | 4115 | ent->owner = abfd; |
411e1bfb AM |
4116 | ent->tls_type = tls_type; |
4117 | ent->got.refcount = 0; | |
4118 | local_got_ents[r_symndx] = ent; | |
4119 | } | |
4120 | ent->got.refcount += 1; | |
4121 | } | |
4122 | ||
e7b938ca AM |
4123 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
4124 | local_got_tls_masks[r_symndx] |= tls_type; | |
411e1bfb | 4125 | return TRUE; |
65f38f15 AM |
4126 | } |
4127 | ||
411e1bfb | 4128 | static bfd_boolean |
4ce794b7 | 4129 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
1e2f5b6e | 4130 | { |
411e1bfb | 4131 | struct plt_entry *ent; |
1e2f5b6e | 4132 | |
411e1bfb AM |
4133 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
4134 | if (ent->addend == addend) | |
4135 | break; | |
4136 | if (ent == NULL) | |
1e2f5b6e | 4137 | { |
411e1bfb | 4138 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4139 | ent = bfd_alloc (abfd, amt); |
411e1bfb AM |
4140 | if (ent == NULL) |
4141 | return FALSE; | |
4142 | ent->next = eh->elf.plt.plist; | |
4143 | ent->addend = addend; | |
4144 | ent->plt.refcount = 0; | |
4145 | eh->elf.plt.plist = ent; | |
1e2f5b6e | 4146 | } |
411e1bfb AM |
4147 | ent->plt.refcount += 1; |
4148 | eh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; | |
4149 | eh->is_func = 1; | |
b34976b6 | 4150 | return TRUE; |
1e2f5b6e AM |
4151 | } |
4152 | ||
5bd4f169 | 4153 | /* Look through the relocs for a section during the first phase, and |
65f38f15 | 4154 | calculate needed space in the global offset table, procedure |
5d1634d7 | 4155 | linkage table, and dynamic reloc sections. */ |
5bd4f169 | 4156 | |
b34976b6 | 4157 | static bfd_boolean |
4ce794b7 AM |
4158 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
4159 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4160 | { |
65f38f15 | 4161 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4162 | Elf_Internal_Shdr *symtab_hdr; |
4163 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
4164 | const Elf_Internal_Rela *rel; | |
4165 | const Elf_Internal_Rela *rel_end; | |
5bd4f169 | 4166 | asection *sreloc; |
1e2f5b6e | 4167 | asection **opd_sym_map; |
5bd4f169 | 4168 | |
1049f94e | 4169 | if (info->relocatable) |
b34976b6 | 4170 | return TRUE; |
5bd4f169 | 4171 | |
680a3378 AM |
4172 | /* Don't do anything special with non-loaded, non-alloced sections. |
4173 | In particular, any relocs in such sections should not affect GOT | |
4174 | and PLT reference counting (ie. we don't allow them to create GOT | |
4175 | or PLT entries), there's no possibility or desire to optimize TLS | |
4176 | relocs, and there's not much point in propagating relocs to shared | |
4177 | libs that the dynamic linker won't relocate. */ | |
4178 | if ((sec->flags & SEC_ALLOC) == 0) | |
4179 | return TRUE; | |
4180 | ||
65f38f15 | 4181 | htab = ppc_hash_table (info); |
5bd4f169 | 4182 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
5bd4f169 AM |
4183 | |
4184 | sym_hashes = elf_sym_hashes (abfd); | |
4185 | sym_hashes_end = (sym_hashes | |
1e2f5b6e AM |
4186 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
4187 | - symtab_hdr->sh_info); | |
5bd4f169 AM |
4188 | |
4189 | sreloc = NULL; | |
1e2f5b6e AM |
4190 | opd_sym_map = NULL; |
4191 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
4192 | { | |
4193 | /* Garbage collection needs some extra help with .opd sections. | |
4194 | We don't want to necessarily keep everything referenced by | |
4195 | relocs in .opd, as that would keep all functions. Instead, | |
4196 | if we reference an .opd symbol (a function descriptor), we | |
4197 | want to keep the function code symbol's section. This is | |
4198 | easy for global symbols, but for local syms we need to keep | |
4199 | information about the associated function section. Later, if | |
4200 | edit_opd deletes entries, we'll use this array to adjust | |
4201 | local syms in .opd. */ | |
4202 | union opd_info { | |
4203 | asection *func_section; | |
4204 | long entry_adjust; | |
4205 | }; | |
4206 | bfd_size_type amt; | |
4207 | ||
3f764659 | 4208 | amt = sec->size * sizeof (union opd_info) / 8; |
4ce794b7 | 4209 | opd_sym_map = bfd_zalloc (abfd, amt); |
1e2f5b6e | 4210 | if (opd_sym_map == NULL) |
b34976b6 | 4211 | return FALSE; |
f0abc2a1 | 4212 | ppc64_elf_section_data (sec)->opd.func_sec = opd_sym_map; |
1e2f5b6e | 4213 | } |
5bd4f169 | 4214 | |
82bd7b59 AM |
4215 | if (htab->sfpr == NULL |
4216 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
b34976b6 | 4217 | return FALSE; |
82bd7b59 | 4218 | |
5bd4f169 AM |
4219 | rel_end = relocs + sec->reloc_count; |
4220 | for (rel = relocs; rel < rel_end; rel++) | |
4221 | { | |
4222 | unsigned long r_symndx; | |
4223 | struct elf_link_hash_entry *h; | |
04c9666a | 4224 | enum elf_ppc64_reloc_type r_type; |
411e1bfb | 4225 | int tls_type = 0; |
5bd4f169 AM |
4226 | |
4227 | r_symndx = ELF64_R_SYM (rel->r_info); | |
4228 | if (r_symndx < symtab_hdr->sh_info) | |
4229 | h = NULL; | |
4230 | else | |
4231 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4232 | ||
4ce794b7 | 4233 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4234 | switch (r_type) |
5bd4f169 | 4235 | { |
411e1bfb AM |
4236 | case R_PPC64_GOT_TLSLD16: |
4237 | case R_PPC64_GOT_TLSLD16_LO: | |
4238 | case R_PPC64_GOT_TLSLD16_HI: | |
4239 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4240 | ppc64_tlsld_got (abfd)->refcount += 1; |
951fd09b | 4241 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4242 | goto dogottls; |
4243 | ||
4244 | case R_PPC64_GOT_TLSGD16: | |
4245 | case R_PPC64_GOT_TLSGD16_LO: | |
4246 | case R_PPC64_GOT_TLSGD16_HI: | |
4247 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4248 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4249 | goto dogottls; |
4250 | ||
4251 | case R_PPC64_GOT_TPREL16_DS: | |
4252 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4253 | case R_PPC64_GOT_TPREL16_HI: | |
4254 | case R_PPC64_GOT_TPREL16_HA: | |
4255 | if (info->shared) | |
4256 | info->flags |= DF_STATIC_TLS; | |
4257 | tls_type = TLS_TLS | TLS_TPREL; | |
4258 | goto dogottls; | |
4259 | ||
4260 | case R_PPC64_GOT_DTPREL16_DS: | |
4261 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4262 | case R_PPC64_GOT_DTPREL16_HI: | |
4263 | case R_PPC64_GOT_DTPREL16_HA: | |
4264 | tls_type = TLS_TLS | TLS_DTPREL; | |
4265 | dogottls: | |
4266 | sec->has_tls_reloc = 1; | |
4267 | /* Fall thru */ | |
4268 | ||
5bd4f169 | 4269 | case R_PPC64_GOT16: |
5bd4f169 | 4270 | case R_PPC64_GOT16_DS: |
65f38f15 AM |
4271 | case R_PPC64_GOT16_HA: |
4272 | case R_PPC64_GOT16_HI: | |
4273 | case R_PPC64_GOT16_LO: | |
5bd4f169 | 4274 | case R_PPC64_GOT16_LO_DS: |
65f38f15 | 4275 | /* This symbol requires a global offset table entry. */ |
ad8e1ba5 | 4276 | sec->has_gp_reloc = 1; |
e717da7e AM |
4277 | if (ppc64_elf_tdata (abfd)->got == NULL |
4278 | && !create_got_section (abfd, info)) | |
b34976b6 | 4279 | return FALSE; |
5bd4f169 AM |
4280 | |
4281 | if (h != NULL) | |
4282 | { | |
411e1bfb AM |
4283 | struct ppc_link_hash_entry *eh; |
4284 | struct got_entry *ent; | |
65f38f15 | 4285 | |
411e1bfb AM |
4286 | eh = (struct ppc_link_hash_entry *) h; |
4287 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
4288 | if (ent->addend == rel->r_addend | |
e717da7e | 4289 | && ent->owner == abfd |
411e1bfb AM |
4290 | && ent->tls_type == tls_type) |
4291 | break; | |
4292 | if (ent == NULL) | |
5bd4f169 | 4293 | { |
411e1bfb | 4294 | bfd_size_type amt = sizeof (*ent); |
4ce794b7 | 4295 | ent = bfd_alloc (abfd, amt); |
411e1bfb | 4296 | if (ent == NULL) |
b34976b6 | 4297 | return FALSE; |
411e1bfb AM |
4298 | ent->next = eh->elf.got.glist; |
4299 | ent->addend = rel->r_addend; | |
e717da7e | 4300 | ent->owner = abfd; |
411e1bfb AM |
4301 | ent->tls_type = tls_type; |
4302 | ent->got.refcount = 0; | |
4303 | eh->elf.got.glist = ent; | |
5bd4f169 | 4304 | } |
411e1bfb | 4305 | ent->got.refcount += 1; |
e7b938ca | 4306 | eh->tls_mask |= tls_type; |
5bd4f169 | 4307 | } |
411e1bfb AM |
4308 | else |
4309 | /* This is a global offset table entry for a local symbol. */ | |
4310 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4311 | rel->r_addend, tls_type)) | |
4312 | return FALSE; | |
5bd4f169 AM |
4313 | break; |
4314 | ||
5bd4f169 | 4315 | case R_PPC64_PLT16_HA: |
65f38f15 AM |
4316 | case R_PPC64_PLT16_HI: |
4317 | case R_PPC64_PLT16_LO: | |
4318 | case R_PPC64_PLT32: | |
4319 | case R_PPC64_PLT64: | |
5bd4f169 | 4320 | /* This symbol requires a procedure linkage table entry. We |
3fad3c7c AM |
4321 | actually build the entry in adjust_dynamic_symbol, |
4322 | because this might be a case of linking PIC code without | |
4323 | linking in any dynamic objects, in which case we don't | |
4324 | need to generate a procedure linkage table after all. */ | |
5bd4f169 AM |
4325 | if (h == NULL) |
4326 | { | |
4327 | /* It does not make sense to have a procedure linkage | |
3fad3c7c | 4328 | table entry for a local symbol. */ |
5bd4f169 | 4329 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 4330 | return FALSE; |
5bd4f169 | 4331 | } |
411e1bfb AM |
4332 | else |
4333 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
4334 | rel->r_addend)) | |
4335 | return FALSE; | |
5bd4f169 AM |
4336 | break; |
4337 | ||
4338 | /* The following relocations don't need to propagate the | |
4339 | relocation if linking a shared object since they are | |
4340 | section relative. */ | |
4341 | case R_PPC64_SECTOFF: | |
4342 | case R_PPC64_SECTOFF_LO: | |
4343 | case R_PPC64_SECTOFF_HI: | |
4344 | case R_PPC64_SECTOFF_HA: | |
4345 | case R_PPC64_SECTOFF_DS: | |
4346 | case R_PPC64_SECTOFF_LO_DS: | |
411e1bfb AM |
4347 | case R_PPC64_DTPREL16: |
4348 | case R_PPC64_DTPREL16_LO: | |
4349 | case R_PPC64_DTPREL16_HI: | |
4350 | case R_PPC64_DTPREL16_HA: | |
4351 | case R_PPC64_DTPREL16_DS: | |
4352 | case R_PPC64_DTPREL16_LO_DS: | |
4353 | case R_PPC64_DTPREL16_HIGHER: | |
4354 | case R_PPC64_DTPREL16_HIGHERA: | |
4355 | case R_PPC64_DTPREL16_HIGHEST: | |
4356 | case R_PPC64_DTPREL16_HIGHESTA: | |
5bd4f169 AM |
4357 | break; |
4358 | ||
ad8e1ba5 AM |
4359 | /* Nor do these. */ |
4360 | case R_PPC64_TOC16: | |
4361 | case R_PPC64_TOC16_LO: | |
4362 | case R_PPC64_TOC16_HI: | |
4363 | case R_PPC64_TOC16_HA: | |
4364 | case R_PPC64_TOC16_DS: | |
4365 | case R_PPC64_TOC16_LO_DS: | |
4366 | sec->has_gp_reloc = 1; | |
4367 | break; | |
4368 | ||
5bd4f169 AM |
4369 | /* This relocation describes the C++ object vtable hierarchy. |
4370 | Reconstruct it for later use during GC. */ | |
4371 | case R_PPC64_GNU_VTINHERIT: | |
c152c796 | 4372 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
b34976b6 | 4373 | return FALSE; |
5bd4f169 AM |
4374 | break; |
4375 | ||
4376 | /* This relocation describes which C++ vtable entries are actually | |
4377 | used. Record for later use during GC. */ | |
4378 | case R_PPC64_GNU_VTENTRY: | |
c152c796 | 4379 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
b34976b6 | 4380 | return FALSE; |
5bd4f169 AM |
4381 | break; |
4382 | ||
721956f4 AM |
4383 | case R_PPC64_REL14: |
4384 | case R_PPC64_REL14_BRTAKEN: | |
4385 | case R_PPC64_REL14_BRNTAKEN: | |
4386 | htab->has_14bit_branch = 1; | |
4387 | /* Fall through. */ | |
4388 | ||
5d1634d7 | 4389 | case R_PPC64_REL24: |
8387904d | 4390 | if (h != NULL) |
5d1634d7 AM |
4391 | { |
4392 | /* We may need a .plt entry if the function this reloc | |
4393 | refers to is in a shared lib. */ | |
411e1bfb AM |
4394 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
4395 | rel->r_addend)) | |
4396 | return FALSE; | |
8387904d AM |
4397 | if (h == &htab->tls_get_addr->elf |
4398 | || h == &htab->tls_get_addr_fd->elf) | |
411e1bfb | 4399 | sec->has_tls_reloc = 1; |
8387904d AM |
4400 | else if (htab->tls_get_addr == NULL |
4401 | && !strncmp (h->root.root.string, ".__tls_get_addr", 15) | |
a48ebf4d AM |
4402 | && (h->root.root.string[15] == 0 |
4403 | || h->root.root.string[15] == '@')) | |
411e1bfb | 4404 | { |
8387904d AM |
4405 | htab->tls_get_addr = (struct ppc_link_hash_entry *) h; |
4406 | sec->has_tls_reloc = 1; | |
4407 | } | |
4408 | else if (htab->tls_get_addr_fd == NULL | |
4409 | && !strncmp (h->root.root.string, "__tls_get_addr", 14) | |
4410 | && (h->root.root.string[14] == 0 | |
4411 | || h->root.root.string[14] == '@')) | |
4412 | { | |
4413 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) h; | |
411e1bfb AM |
4414 | sec->has_tls_reloc = 1; |
4415 | } | |
4416 | } | |
4417 | break; | |
4418 | ||
4419 | case R_PPC64_TPREL64: | |
4420 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
4421 | if (info->shared) | |
4422 | info->flags |= DF_STATIC_TLS; | |
4423 | goto dotlstoc; | |
4424 | ||
4425 | case R_PPC64_DTPMOD64: | |
4426 | if (rel + 1 < rel_end | |
4427 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
4428 | && rel[1].r_offset == rel->r_offset + 8) | |
951fd09b | 4429 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
411e1bfb | 4430 | else |
951fd09b | 4431 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
411e1bfb AM |
4432 | goto dotlstoc; |
4433 | ||
4434 | case R_PPC64_DTPREL64: | |
4435 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
4436 | if (rel != relocs | |
4437 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
4438 | && rel[-1].r_offset == rel->r_offset - 8) | |
4439 | /* This is the second reloc of a dtpmod, dtprel pair. | |
4440 | Don't mark with TLS_DTPREL. */ | |
4441 | goto dodyn; | |
4442 | ||
4443 | dotlstoc: | |
4444 | sec->has_tls_reloc = 1; | |
4445 | if (h != NULL) | |
4446 | { | |
4447 | struct ppc_link_hash_entry *eh; | |
4448 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 4449 | eh->tls_mask |= tls_type; |
411e1bfb AM |
4450 | } |
4451 | else | |
4452 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
4453 | rel->r_addend, tls_type)) | |
4454 | return FALSE; | |
4455 | ||
4456 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) | |
4457 | { | |
e7b938ca | 4458 | /* One extra to simplify get_tls_mask. */ |
eea6121a | 4459 | bfd_size_type amt = sec->size * sizeof (unsigned) / 8 + 1; |
4ce794b7 | 4460 | ppc64_elf_section_data (sec)->t_symndx = bfd_zalloc (abfd, amt); |
411e1bfb AM |
4461 | if (ppc64_elf_section_data (sec)->t_symndx == NULL) |
4462 | return FALSE; | |
4463 | } | |
4464 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
4465 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8] = r_symndx; | |
951fd09b AM |
4466 | |
4467 | /* Mark the second slot of a GD or LD entry. | |
4468 | -1 to indicate GD and -2 to indicate LD. */ | |
4469 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
4470 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -1; | |
4471 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) | |
4472 | ppc64_elf_section_data (sec)->t_symndx[rel->r_offset / 8 + 1] = -2; | |
411e1bfb AM |
4473 | goto dodyn; |
4474 | ||
4475 | case R_PPC64_TPREL16: | |
4476 | case R_PPC64_TPREL16_LO: | |
4477 | case R_PPC64_TPREL16_HI: | |
4478 | case R_PPC64_TPREL16_HA: | |
4479 | case R_PPC64_TPREL16_DS: | |
4480 | case R_PPC64_TPREL16_LO_DS: | |
4481 | case R_PPC64_TPREL16_HIGHER: | |
4482 | case R_PPC64_TPREL16_HIGHERA: | |
4483 | case R_PPC64_TPREL16_HIGHEST: | |
4484 | case R_PPC64_TPREL16_HIGHESTA: | |
4485 | if (info->shared) | |
4486 | { | |
4487 | info->flags |= DF_STATIC_TLS; | |
4488 | goto dodyn; | |
5d1634d7 AM |
4489 | } |
4490 | break; | |
4491 | ||
e86ce104 | 4492 | case R_PPC64_ADDR64: |
1e2f5b6e | 4493 | if (opd_sym_map != NULL |
1e2f5b6e | 4494 | && rel + 1 < rel_end |
4ce794b7 | 4495 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
1e2f5b6e | 4496 | { |
8387904d AM |
4497 | if (h != NULL) |
4498 | { | |
4499 | if (h->root.root.string[0] == '.' | |
4500 | && h->root.root.string[1] != 0 | |
4501 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
4502 | ; | |
4503 | else | |
4504 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
4505 | } | |
4506 | else | |
4507 | { | |
4508 | asection *s; | |
1e2f5b6e | 4509 | |
8387904d AM |
4510 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec, |
4511 | r_symndx); | |
4512 | if (s == NULL) | |
4513 | return FALSE; | |
4514 | else if (s != sec) | |
3f764659 | 4515 | opd_sym_map[rel->r_offset / 8] = s; |
8387904d | 4516 | } |
1e2f5b6e | 4517 | } |
e86ce104 AM |
4518 | /* Fall through. */ |
4519 | ||
04c9666a | 4520 | case R_PPC64_REL30: |
5bd4f169 | 4521 | case R_PPC64_REL32: |
04c9666a | 4522 | case R_PPC64_REL64: |
65f38f15 AM |
4523 | case R_PPC64_ADDR14: |
4524 | case R_PPC64_ADDR14_BRNTAKEN: | |
4525 | case R_PPC64_ADDR14_BRTAKEN: | |
4526 | case R_PPC64_ADDR16: | |
4527 | case R_PPC64_ADDR16_DS: | |
4528 | case R_PPC64_ADDR16_HA: | |
4529 | case R_PPC64_ADDR16_HI: | |
4530 | case R_PPC64_ADDR16_HIGHER: | |
4531 | case R_PPC64_ADDR16_HIGHERA: | |
4532 | case R_PPC64_ADDR16_HIGHEST: | |
4533 | case R_PPC64_ADDR16_HIGHESTA: | |
4534 | case R_PPC64_ADDR16_LO: | |
4535 | case R_PPC64_ADDR16_LO_DS: | |
4536 | case R_PPC64_ADDR24: | |
65f38f15 | 4537 | case R_PPC64_ADDR32: |
65f38f15 AM |
4538 | case R_PPC64_UADDR16: |
4539 | case R_PPC64_UADDR32: | |
4540 | case R_PPC64_UADDR64: | |
5bd4f169 | 4541 | case R_PPC64_TOC: |
81848ca0 AM |
4542 | if (h != NULL && !info->shared) |
4543 | /* We may need a copy reloc. */ | |
4544 | h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; | |
4545 | ||
41bd81ab | 4546 | /* Don't propagate .opd relocs. */ |
1e2f5b6e | 4547 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
e86ce104 | 4548 | break; |
e86ce104 | 4549 | |
65f38f15 AM |
4550 | /* If we are creating a shared library, and this is a reloc |
4551 | against a global symbol, or a non PC relative reloc | |
4552 | against a local symbol, then we need to copy the reloc | |
4553 | into the shared library. However, if we are linking with | |
4554 | -Bsymbolic, we do not need to copy a reloc against a | |
4555 | global symbol which is defined in an object we are | |
4556 | including in the link (i.e., DEF_REGULAR is set). At | |
4557 | this point we have not seen all the input files, so it is | |
4558 | possible that DEF_REGULAR is not set now but will be set | |
4559 | later (it is never cleared). In case of a weak definition, | |
4560 | DEF_REGULAR may be cleared later by a strong definition in | |
4561 | a shared library. We account for that possibility below by | |
f4656909 | 4562 | storing information in the dyn_relocs field of the hash |
65f38f15 AM |
4563 | table entry. A similar situation occurs when creating |
4564 | shared libraries and symbol visibility changes render the | |
4565 | symbol local. | |
4566 | ||
4567 | If on the other hand, we are creating an executable, we | |
4568 | may need to keep relocations for symbols satisfied by a | |
4569 | dynamic library if we manage to avoid copy relocs for the | |
4570 | symbol. */ | |
411e1bfb | 4571 | dodyn: |
65f38f15 | 4572 | if ((info->shared |
411e1bfb | 4573 | && (MUST_BE_DYN_RELOC (r_type) |
65f38f15 AM |
4574 | || (h != NULL |
4575 | && (! info->symbolic | |
4576 | || h->root.type == bfd_link_hash_defweak | |
4577 | || (h->elf_link_hash_flags | |
4578 | & ELF_LINK_HASH_DEF_REGULAR) == 0)))) | |
f4656909 AM |
4579 | || (ELIMINATE_COPY_RELOCS |
4580 | && !info->shared | |
65f38f15 AM |
4581 | && h != NULL |
4582 | && (h->root.type == bfd_link_hash_defweak | |
4583 | || (h->elf_link_hash_flags | |
4584 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) | |
5bd4f169 | 4585 | { |
ec338859 AM |
4586 | struct ppc_dyn_relocs *p; |
4587 | struct ppc_dyn_relocs **head; | |
4588 | ||
65f38f15 AM |
4589 | /* We must copy these reloc types into the output file. |
4590 | Create a reloc section in dynobj and make room for | |
4591 | this reloc. */ | |
5bd4f169 AM |
4592 | if (sreloc == NULL) |
4593 | { | |
4594 | const char *name; | |
65f38f15 | 4595 | bfd *dynobj; |
5bd4f169 AM |
4596 | |
4597 | name = (bfd_elf_string_from_elf_section | |
4598 | (abfd, | |
4599 | elf_elfheader (abfd)->e_shstrndx, | |
4600 | elf_section_data (sec)->rel_hdr.sh_name)); | |
4601 | if (name == NULL) | |
b34976b6 | 4602 | return FALSE; |
5bd4f169 | 4603 | |
65f38f15 AM |
4604 | if (strncmp (name, ".rela", 5) != 0 |
4605 | || strcmp (bfd_get_section_name (abfd, sec), | |
4606 | name + 5) != 0) | |
4607 | { | |
4608 | (*_bfd_error_handler) | |
d003868e AM |
4609 | (_("%B: bad relocation section name `%s\'"), |
4610 | abfd, name); | |
5d1634d7 | 4611 | bfd_set_error (bfd_error_bad_value); |
65f38f15 AM |
4612 | } |
4613 | ||
65f38f15 | 4614 | dynobj = htab->elf.dynobj; |
5bd4f169 AM |
4615 | sreloc = bfd_get_section_by_name (dynobj, name); |
4616 | if (sreloc == NULL) | |
4617 | { | |
4618 | flagword flags; | |
4619 | ||
4620 | sreloc = bfd_make_section (dynobj, name); | |
4621 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
4622 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
4623 | if ((sec->flags & SEC_ALLOC) != 0) | |
4624 | flags |= SEC_ALLOC | SEC_LOAD; | |
4625 | if (sreloc == NULL | |
4626 | || ! bfd_set_section_flags (dynobj, sreloc, flags) | |
65f38f15 | 4627 | || ! bfd_set_section_alignment (dynobj, sreloc, 3)) |
b34976b6 | 4628 | return FALSE; |
5bd4f169 | 4629 | } |
65f38f15 | 4630 | elf_section_data (sec)->sreloc = sreloc; |
5bd4f169 AM |
4631 | } |
4632 | ||
65f38f15 AM |
4633 | /* If this is a global symbol, we count the number of |
4634 | relocations we need for this symbol. */ | |
4635 | if (h != NULL) | |
4636 | { | |
ec338859 | 4637 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
65f38f15 AM |
4638 | } |
4639 | else | |
4640 | { | |
ec338859 AM |
4641 | /* Track dynamic relocs needed for local syms too. |
4642 | We really need local syms available to do this | |
4643 | easily. Oh well. */ | |
4644 | ||
4645 | asection *s; | |
4646 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, | |
4647 | sec, r_symndx); | |
4648 | if (s == NULL) | |
b34976b6 | 4649 | return FALSE; |
ec338859 AM |
4650 | |
4651 | head = ((struct ppc_dyn_relocs **) | |
4652 | &elf_section_data (s)->local_dynrel); | |
65f38f15 | 4653 | } |
ec338859 AM |
4654 | |
4655 | p = *head; | |
4656 | if (p == NULL || p->sec != sec) | |
4657 | { | |
4ce794b7 | 4658 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
ec338859 | 4659 | if (p == NULL) |
b34976b6 | 4660 | return FALSE; |
ec338859 AM |
4661 | p->next = *head; |
4662 | *head = p; | |
4663 | p->sec = sec; | |
4664 | p->count = 0; | |
4665 | p->pc_count = 0; | |
4666 | } | |
4667 | ||
4668 | p->count += 1; | |
411e1bfb | 4669 | if (!MUST_BE_DYN_RELOC (r_type)) |
ec338859 | 4670 | p->pc_count += 1; |
65f38f15 | 4671 | } |
5bd4f169 | 4672 | break; |
65f38f15 AM |
4673 | |
4674 | default: | |
96e0dda4 | 4675 | break; |
5bd4f169 AM |
4676 | } |
4677 | } | |
4678 | ||
b34976b6 | 4679 | return TRUE; |
5bd4f169 AM |
4680 | } |
4681 | ||
8387904d AM |
4682 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
4683 | of the code entry point, and its section. */ | |
4684 | ||
4685 | static bfd_vma | |
4686 | opd_entry_value (asection *opd_sec, | |
4687 | bfd_vma offset, | |
4688 | asection **code_sec, | |
4689 | bfd_vma *code_off) | |
4690 | { | |
4691 | bfd *opd_bfd = opd_sec->owner; | |
4692 | Elf_Internal_Rela *lo, *hi, *look; | |
4693 | ||
4694 | /* Go find the opd reloc at the sym address. */ | |
4695 | lo = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
4696 | BFD_ASSERT (lo != NULL); | |
4697 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
4698 | ||
4699 | while (lo < hi) | |
4700 | { | |
4701 | look = lo + (hi - lo) / 2; | |
4702 | if (look->r_offset < offset) | |
4703 | lo = look + 1; | |
4704 | else if (look->r_offset > offset) | |
4705 | hi = look; | |
4706 | else | |
4707 | { | |
4708 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (opd_bfd)->symtab_hdr; | |
4709 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 | |
4710 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
4711 | { | |
4712 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
4713 | bfd_vma val; | |
4714 | asection *sec; | |
4715 | ||
4716 | if (symndx < symtab_hdr->sh_info) | |
4717 | { | |
4718 | Elf_Internal_Sym *sym; | |
4719 | ||
4720 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
4721 | if (sym == NULL) | |
4722 | { | |
4723 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
4724 | symtab_hdr->sh_info, | |
4725 | 0, NULL, NULL, NULL); | |
4726 | if (sym == NULL) | |
4727 | return (bfd_vma) -1; | |
4728 | symtab_hdr->contents = (bfd_byte *) sym; | |
4729 | } | |
4730 | ||
4731 | sym += symndx; | |
4732 | val = sym->st_value; | |
4733 | sec = NULL; | |
4734 | if ((sym->st_shndx != SHN_UNDEF | |
4735 | && sym->st_shndx < SHN_LORESERVE) | |
4736 | || sym->st_shndx > SHN_HIRESERVE) | |
4737 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); | |
4738 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
4739 | } | |
4740 | else | |
4741 | { | |
4742 | struct elf_link_hash_entry **sym_hashes; | |
4743 | struct elf_link_hash_entry *rh; | |
4744 | ||
4745 | sym_hashes = elf_sym_hashes (opd_bfd); | |
4746 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
4747 | while (rh->root.type == bfd_link_hash_indirect | |
4748 | || rh->root.type == bfd_link_hash_warning) | |
4749 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
4750 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
4751 | || rh->root.type == bfd_link_hash_defweak); | |
4752 | val = rh->root.u.def.value; | |
4753 | sec = rh->root.u.def.section; | |
4754 | } | |
4755 | val += look->r_addend; | |
4756 | if (code_off != NULL) | |
4757 | *code_off = val; | |
4758 | if (code_sec != NULL) | |
4759 | *code_sec = sec; | |
4760 | if (sec != NULL && sec->output_section != NULL) | |
4761 | val += sec->output_section->vma + sec->output_offset; | |
4762 | return val; | |
4763 | } | |
4764 | break; | |
4765 | } | |
4766 | } | |
4767 | return (bfd_vma) -1; | |
4768 | } | |
4769 | ||
5bd4f169 AM |
4770 | /* Return the section that should be marked against GC for a given |
4771 | relocation. */ | |
4772 | ||
4773 | static asection * | |
4ce794b7 | 4774 | ppc64_elf_gc_mark_hook (asection *sec, |
ccfa59ea | 4775 | struct bfd_link_info *info, |
4ce794b7 AM |
4776 | Elf_Internal_Rela *rel, |
4777 | struct elf_link_hash_entry *h, | |
4778 | Elf_Internal_Sym *sym) | |
5bd4f169 | 4779 | { |
ccfa59ea AM |
4780 | asection *rsec; |
4781 | ||
4782 | /* First mark all our entry sym sections. */ | |
4783 | if (info->gc_sym_list != NULL) | |
4784 | { | |
4785 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
4786 | struct bfd_sym_chain *sym = info->gc_sym_list; | |
4787 | ||
4788 | info->gc_sym_list = NULL; | |
4789 | do | |
4790 | { | |
4791 | struct ppc_link_hash_entry *eh; | |
4792 | ||
4793 | eh = (struct ppc_link_hash_entry *) | |
4794 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
4795 | if (eh == NULL) | |
4796 | continue; | |
4797 | if (eh->elf.root.type != bfd_link_hash_defined | |
4798 | && eh->elf.root.type != bfd_link_hash_defweak) | |
4799 | continue; | |
4800 | ||
4801 | if (eh->is_func_descriptor) | |
4802 | rsec = eh->oh->elf.root.u.def.section; | |
8387904d AM |
4803 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
4804 | && opd_entry_value (eh->elf.root.u.def.section, | |
4805 | eh->elf.root.u.def.value, | |
4806 | &rsec, NULL) != (bfd_vma) -1) | |
4807 | ; | |
ccfa59ea AM |
4808 | else |
4809 | continue; | |
4810 | ||
4811 | if (!rsec->gc_mark) | |
4812 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4813 | ||
4814 | rsec = eh->elf.root.u.def.section; | |
4815 | if (!rsec->gc_mark) | |
4816 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4817 | ||
4818 | sym = sym->next; | |
4819 | } | |
4820 | while (sym != NULL); | |
4821 | } | |
4822 | ||
4823 | /* Syms return NULL if we're marking .opd, so we avoid marking all | |
4824 | function sections, as all functions are referenced in .opd. */ | |
4825 | rsec = NULL; | |
4826 | if (get_opd_info (sec) != NULL) | |
4827 | return rsec; | |
1e2f5b6e | 4828 | |
5bd4f169 AM |
4829 | if (h != NULL) |
4830 | { | |
04c9666a | 4831 | enum elf_ppc64_reloc_type r_type; |
ccfa59ea | 4832 | struct ppc_link_hash_entry *eh; |
a33d1f77 | 4833 | |
4ce794b7 | 4834 | r_type = ELF64_R_TYPE (rel->r_info); |
a33d1f77 | 4835 | switch (r_type) |
5bd4f169 AM |
4836 | { |
4837 | case R_PPC64_GNU_VTINHERIT: | |
4838 | case R_PPC64_GNU_VTENTRY: | |
4839 | break; | |
4840 | ||
4841 | default: | |
4842 | switch (h->root.type) | |
4843 | { | |
4844 | case bfd_link_hash_defined: | |
4845 | case bfd_link_hash_defweak: | |
ccfa59ea AM |
4846 | eh = (struct ppc_link_hash_entry *) h; |
4847 | if (eh->oh != NULL && eh->oh->is_func_descriptor) | |
4848 | eh = eh->oh; | |
1e2f5b6e AM |
4849 | |
4850 | /* Function descriptor syms cause the associated | |
4851 | function code sym section to be marked. */ | |
ccfa59ea AM |
4852 | if (eh->is_func_descriptor) |
4853 | { | |
4854 | /* They also mark their opd section. */ | |
4855 | if (!eh->elf.root.u.def.section->gc_mark) | |
4856 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4857 | ppc64_elf_gc_mark_hook); | |
4858 | ||
4859 | rsec = eh->oh->elf.root.u.def.section; | |
4860 | } | |
8387904d AM |
4861 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
4862 | && opd_entry_value (eh->elf.root.u.def.section, | |
4863 | eh->elf.root.u.def.value, | |
4864 | &rsec, NULL) != (bfd_vma) -1) | |
4865 | { | |
4866 | if (!eh->elf.root.u.def.section->gc_mark) | |
4867 | _bfd_elf_gc_mark (info, eh->elf.root.u.def.section, | |
4868 | ppc64_elf_gc_mark_hook); | |
4869 | } | |
ccfa59ea | 4870 | else |
1e2f5b6e AM |
4871 | rsec = h->root.u.def.section; |
4872 | break; | |
5bd4f169 AM |
4873 | |
4874 | case bfd_link_hash_common: | |
1e2f5b6e AM |
4875 | rsec = h->root.u.c.p->section; |
4876 | break; | |
5bd4f169 AM |
4877 | |
4878 | default: | |
4879 | break; | |
4880 | } | |
4881 | } | |
4882 | } | |
4883 | else | |
4884 | { | |
1e2f5b6e AM |
4885 | asection **opd_sym_section; |
4886 | ||
4887 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
ccfa59ea | 4888 | opd_sym_section = get_opd_info (rsec); |
1e2f5b6e | 4889 | if (opd_sym_section != NULL) |
ccfa59ea AM |
4890 | { |
4891 | if (!rsec->gc_mark) | |
4892 | _bfd_elf_gc_mark (info, rsec, ppc64_elf_gc_mark_hook); | |
4893 | ||
3f764659 | 4894 | rsec = opd_sym_section[sym->st_value / 8]; |
ccfa59ea | 4895 | } |
5bd4f169 AM |
4896 | } |
4897 | ||
1e2f5b6e | 4898 | return rsec; |
5bd4f169 AM |
4899 | } |
4900 | ||
65f38f15 AM |
4901 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
4902 | section being removed. */ | |
5bd4f169 | 4903 | |
b34976b6 | 4904 | static bfd_boolean |
4ce794b7 AM |
4905 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
4906 | asection *sec, const Elf_Internal_Rela *relocs) | |
5bd4f169 | 4907 | { |
411e1bfb | 4908 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
4909 | Elf_Internal_Shdr *symtab_hdr; |
4910 | struct elf_link_hash_entry **sym_hashes; | |
411e1bfb | 4911 | struct got_entry **local_got_ents; |
5bd4f169 | 4912 | const Elf_Internal_Rela *rel, *relend; |
5bd4f169 | 4913 | |
680a3378 AM |
4914 | if ((sec->flags & SEC_ALLOC) == 0) |
4915 | return TRUE; | |
4916 | ||
ec338859 AM |
4917 | elf_section_data (sec)->local_dynrel = NULL; |
4918 | ||
411e1bfb | 4919 | htab = ppc_hash_table (info); |
5bd4f169 AM |
4920 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
4921 | sym_hashes = elf_sym_hashes (abfd); | |
411e1bfb | 4922 | local_got_ents = elf_local_got_ents (abfd); |
5bd4f169 AM |
4923 | |
4924 | relend = relocs + sec->reloc_count; | |
4925 | for (rel = relocs; rel < relend; rel++) | |
a33d1f77 AM |
4926 | { |
4927 | unsigned long r_symndx; | |
04c9666a | 4928 | enum elf_ppc64_reloc_type r_type; |
58ac9f71 | 4929 | struct elf_link_hash_entry *h = NULL; |
411e1bfb | 4930 | char tls_type = 0; |
5bd4f169 | 4931 | |
a33d1f77 | 4932 | r_symndx = ELF64_R_SYM (rel->r_info); |
4ce794b7 | 4933 | r_type = ELF64_R_TYPE (rel->r_info); |
58ac9f71 AM |
4934 | if (r_symndx >= symtab_hdr->sh_info) |
4935 | { | |
4936 | struct ppc_link_hash_entry *eh; | |
4937 | struct ppc_dyn_relocs **pp; | |
4938 | struct ppc_dyn_relocs *p; | |
4939 | ||
4940 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4941 | eh = (struct ppc_link_hash_entry *) h; | |
4942 | ||
4943 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
4944 | if (p->sec == sec) | |
4945 | { | |
4946 | /* Everything must go for SEC. */ | |
4947 | *pp = p->next; | |
4948 | break; | |
4949 | } | |
4950 | } | |
4951 | ||
a33d1f77 AM |
4952 | switch (r_type) |
4953 | { | |
411e1bfb AM |
4954 | case R_PPC64_GOT_TLSLD16: |
4955 | case R_PPC64_GOT_TLSLD16_LO: | |
4956 | case R_PPC64_GOT_TLSLD16_HI: | |
4957 | case R_PPC64_GOT_TLSLD16_HA: | |
e717da7e | 4958 | ppc64_tlsld_got (abfd)->refcount -= 1; |
951fd09b | 4959 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
4960 | goto dogot; |
4961 | ||
4962 | case R_PPC64_GOT_TLSGD16: | |
4963 | case R_PPC64_GOT_TLSGD16_LO: | |
4964 | case R_PPC64_GOT_TLSGD16_HI: | |
4965 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 4966 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
4967 | goto dogot; |
4968 | ||
4969 | case R_PPC64_GOT_TPREL16_DS: | |
4970 | case R_PPC64_GOT_TPREL16_LO_DS: | |
4971 | case R_PPC64_GOT_TPREL16_HI: | |
4972 | case R_PPC64_GOT_TPREL16_HA: | |
4973 | tls_type = TLS_TLS | TLS_TPREL; | |
4974 | goto dogot; | |
4975 | ||
4976 | case R_PPC64_GOT_DTPREL16_DS: | |
4977 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
4978 | case R_PPC64_GOT_DTPREL16_HI: | |
4979 | case R_PPC64_GOT_DTPREL16_HA: | |
4980 | tls_type = TLS_TLS | TLS_DTPREL; | |
4981 | goto dogot; | |
4982 | ||
a33d1f77 AM |
4983 | case R_PPC64_GOT16: |
4984 | case R_PPC64_GOT16_DS: | |
4985 | case R_PPC64_GOT16_HA: | |
4986 | case R_PPC64_GOT16_HI: | |
4987 | case R_PPC64_GOT16_LO: | |
4988 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb AM |
4989 | dogot: |
4990 | { | |
4991 | struct got_entry *ent; | |
4992 | ||
58ac9f71 AM |
4993 | if (h != NULL) |
4994 | ent = h->got.glist; | |
411e1bfb AM |
4995 | else |
4996 | ent = local_got_ents[r_symndx]; | |
4997 | ||
4998 | for (; ent != NULL; ent = ent->next) | |
4999 | if (ent->addend == rel->r_addend | |
e717da7e | 5000 | && ent->owner == abfd |
411e1bfb AM |
5001 | && ent->tls_type == tls_type) |
5002 | break; | |
5003 | if (ent == NULL) | |
5004 | abort (); | |
5005 | if (ent->got.refcount > 0) | |
5006 | ent->got.refcount -= 1; | |
5007 | } | |
a33d1f77 | 5008 | break; |
65f38f15 | 5009 | |
a33d1f77 AM |
5010 | case R_PPC64_PLT16_HA: |
5011 | case R_PPC64_PLT16_HI: | |
5012 | case R_PPC64_PLT16_LO: | |
5013 | case R_PPC64_PLT32: | |
5014 | case R_PPC64_PLT64: | |
721956f4 AM |
5015 | case R_PPC64_REL14: |
5016 | case R_PPC64_REL14_BRNTAKEN: | |
5017 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 | 5018 | case R_PPC64_REL24: |
58ac9f71 | 5019 | if (h != NULL) |
5d1634d7 | 5020 | { |
411e1bfb AM |
5021 | struct plt_entry *ent; |
5022 | ||
411e1bfb AM |
5023 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
5024 | if (ent->addend == rel->r_addend) | |
5025 | break; | |
5026 | if (ent == NULL) | |
5027 | abort (); | |
5028 | if (ent->plt.refcount > 0) | |
5029 | ent->plt.refcount -= 1; | |
5d1634d7 | 5030 | } |
e86ce104 | 5031 | break; |
5d1634d7 | 5032 | |
a33d1f77 AM |
5033 | default: |
5034 | break; | |
5035 | } | |
5036 | } | |
b34976b6 | 5037 | return TRUE; |
5bd4f169 AM |
5038 | } |
5039 | ||
e86ce104 AM |
5040 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
5041 | information on function code symbol entries to their corresponding | |
5042 | function descriptor symbol entries. */ | |
b34976b6 | 5043 | static bfd_boolean |
4ce794b7 | 5044 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 5045 | { |
e86ce104 | 5046 | struct bfd_link_info *info; |
65f38f15 | 5047 | struct ppc_link_hash_table *htab; |
411e1bfb | 5048 | struct plt_entry *ent; |
50bc7936 AM |
5049 | struct ppc_link_hash_entry *fh; |
5050 | struct ppc_link_hash_entry *fdh; | |
5051 | bfd_boolean force_local; | |
5bd4f169 | 5052 | |
50bc7936 AM |
5053 | fh = (struct ppc_link_hash_entry *) h; |
5054 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
b34976b6 | 5055 | return TRUE; |
e86ce104 | 5056 | |
50bc7936 AM |
5057 | if (fh->elf.root.type == bfd_link_hash_warning) |
5058 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
e92d460e | 5059 | |
4ce794b7 | 5060 | info = inf; |
65f38f15 | 5061 | htab = ppc_hash_table (info); |
5bd4f169 | 5062 | |
c09bdfe5 AM |
5063 | /* Resolve undefined references to dot-symbols as the value |
5064 | in the function descriptor, if we have one in a regular object. | |
5065 | This is to satisfy cases like ".quad .foo". Calls to functions | |
5066 | in dynamic objects are handled elsewhere. */ | |
5067 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
5068 | && fh->was_undefined | |
5069 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
5070 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
5071 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
5072 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
5073 | fh->oh->elf.root.u.def.value, | |
5074 | &fh->elf.root.u.def.section, | |
5075 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
5076 | { | |
5077 | fh->elf.root.type = fh->oh->elf.root.type; | |
5078 | fh->elf.elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL; | |
5079 | } | |
5080 | ||
e86ce104 AM |
5081 | /* If this is a function code symbol, transfer dynamic linking |
5082 | information to the function descriptor symbol. */ | |
50bc7936 | 5083 | if (!fh->is_func) |
b34976b6 | 5084 | return TRUE; |
e86ce104 | 5085 | |
50bc7936 | 5086 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
5087 | if (ent->plt.refcount > 0) |
5088 | break; | |
50bc7936 AM |
5089 | if (ent == NULL |
5090 | || fh->elf.root.root.string[0] != '.' | |
5091 | || fh->elf.root.root.string[1] == '\0') | |
5092 | return TRUE; | |
5bd4f169 | 5093 | |
50bc7936 AM |
5094 | /* Find the corresponding function descriptor symbol. Create it |
5095 | as undefined if necessary. */ | |
5bd4f169 | 5096 | |
50bc7936 AM |
5097 | fdh = get_fdh (fh, htab); |
5098 | if (fdh != NULL) | |
5099 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
5100 | || fdh->elf.root.type == bfd_link_hash_warning) | |
5101 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
5bd4f169 | 5102 | |
50bc7936 AM |
5103 | if (fdh == NULL |
5104 | && info->shared | |
5105 | && (fh->elf.root.type == bfd_link_hash_undefined | |
5106 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
5107 | { | |
5108 | bfd *abfd; | |
5109 | asymbol *newsym; | |
5110 | struct bfd_link_hash_entry *bh; | |
5111 | ||
5112 | abfd = fh->elf.root.u.undef.abfd; | |
5113 | newsym = bfd_make_empty_symbol (abfd); | |
5114 | newsym->name = fh->elf.root.root.string + 1; | |
5115 | newsym->section = bfd_und_section_ptr; | |
5116 | newsym->value = 0; | |
5117 | newsym->flags = BSF_OBJECT; | |
5118 | if (fh->elf.root.type == bfd_link_hash_undefweak) | |
5119 | newsym->flags |= BSF_WEAK; | |
5120 | ||
5121 | bh = &fdh->elf.root; | |
5122 | if ( !(_bfd_generic_link_add_one_symbol | |
5123 | (info, abfd, newsym->name, newsym->flags, | |
5124 | newsym->section, newsym->value, NULL, FALSE, FALSE, &bh))) | |
648cca2c | 5125 | { |
50bc7936 | 5126 | return FALSE; |
648cca2c | 5127 | } |
50bc7936 AM |
5128 | fdh = (struct ppc_link_hash_entry *) bh; |
5129 | fdh->elf.elf_link_hash_flags &= ~ELF_LINK_NON_ELF; | |
5130 | fdh->elf.size = 24; | |
5131 | fdh->elf.type = STT_OBJECT; | |
5132 | } | |
648cca2c | 5133 | |
50bc7936 AM |
5134 | if (fdh != NULL |
5135 | && (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 | |
5136 | && (info->shared | |
5137 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 | |
5138 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0 | |
5139 | || (fdh->elf.root.type == bfd_link_hash_undefweak | |
5140 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
5141 | { | |
5142 | if (fdh->elf.dynindx == -1) | |
c152c796 | 5143 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
50bc7936 AM |
5144 | return FALSE; |
5145 | fdh->elf.elf_link_hash_flags | |
5146 | |= (fh->elf.elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR | |
5147 | | ELF_LINK_HASH_REF_DYNAMIC | |
5148 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
5149 | | ELF_LINK_NON_GOT_REF)); | |
5150 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) | |
e86ce104 | 5151 | { |
8387904d AM |
5152 | struct plt_entry **ep = &fdh->elf.plt.plist; |
5153 | while (*ep != NULL) | |
5154 | ep = &(*ep)->next; | |
5155 | *ep = fh->elf.plt.plist; | |
5156 | fh->elf.plt.plist = NULL; | |
50bc7936 | 5157 | fdh->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
e86ce104 | 5158 | } |
50bc7936 | 5159 | fdh->is_func_descriptor = 1; |
34814b9f AM |
5160 | fdh->oh = fh; |
5161 | fh->oh = fdh; | |
e86ce104 AM |
5162 | } |
5163 | ||
50bc7936 AM |
5164 | /* Now that the info is on the function descriptor, clear the |
5165 | function code sym info. Any function code syms for which we | |
5166 | don't have a definition in a regular file, we force local. | |
5167 | This prevents a shared library from exporting syms that have | |
5168 | been imported from another library. Function code syms that | |
5169 | are really in the library we must leave global to prevent the | |
5170 | linker dragging in a definition from a static library. */ | |
5171 | force_local | |
5172 | = (info->shared | |
5173 | && ((fh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
5174 | || fdh == NULL | |
5175 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 | |
5176 | || (fdh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)); | |
5177 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); | |
5178 | ||
b34976b6 | 5179 | return TRUE; |
e86ce104 | 5180 | } |
40b8271b | 5181 | |
82bd7b59 AM |
5182 | #define MIN_SAVE_FPR 14 |
5183 | #define MAX_SAVE_FPR 31 | |
5184 | ||
e86ce104 | 5185 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
82bd7b59 AM |
5186 | this hook to a) provide some gcc support functions, and b) transfer |
5187 | dynamic linking information gathered so far on function code symbol | |
5188 | entries, to their corresponding function descriptor symbol entries. */ | |
b34976b6 | 5189 | static bfd_boolean |
4ce794b7 AM |
5190 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
5191 | struct bfd_link_info *info) | |
e86ce104 AM |
5192 | { |
5193 | struct ppc_link_hash_table *htab; | |
82bd7b59 AM |
5194 | unsigned int lowest_savef = MAX_SAVE_FPR + 2; |
5195 | unsigned int lowest_restf = MAX_SAVE_FPR + 2; | |
5196 | unsigned int i; | |
5197 | struct elf_link_hash_entry *h; | |
721956f4 | 5198 | bfd_byte *p; |
82bd7b59 | 5199 | char sym[10]; |
e86ce104 AM |
5200 | |
5201 | htab = ppc_hash_table (info); | |
82bd7b59 AM |
5202 | |
5203 | if (htab->sfpr == NULL) | |
5204 | /* We don't have any relocs. */ | |
b34976b6 | 5205 | return TRUE; |
82bd7b59 AM |
5206 | |
5207 | /* First provide any missing ._savef* and ._restf* functions. */ | |
5208 | memcpy (sym, "._savef14", 10); | |
5209 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
5210 | { | |
5211 | sym[7] = i / 10 + '0'; | |
5212 | sym[8] = i % 10 + '0'; | |
b34976b6 | 5213 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); |
82bd7b59 | 5214 | if (h != NULL |
772119ce | 5215 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
82bd7b59 AM |
5216 | { |
5217 | if (lowest_savef > i) | |
5218 | lowest_savef = i; | |
5219 | h->root.type = bfd_link_hash_defined; | |
5220 | h->root.u.def.section = htab->sfpr; | |
5221 | h->root.u.def.value = (i - lowest_savef) * 4; | |
5222 | h->type = STT_FUNC; | |
5223 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
772119ce | 5224 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
82bd7b59 AM |
5225 | } |
5226 | } | |
5227 | ||
5228 | memcpy (sym, "._restf14", 10); | |
5229 | for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++) | |
5230 | { | |
5231 | sym[7] = i / 10 + '0'; | |
5232 | sym[8] = i % 10 + '0'; | |
b34976b6 | 5233 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); |
82bd7b59 | 5234 | if (h != NULL |
772119ce | 5235 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
82bd7b59 AM |
5236 | { |
5237 | if (lowest_restf > i) | |
5238 | lowest_restf = i; | |
5239 | h->root.type = bfd_link_hash_defined; | |
5240 | h->root.u.def.section = htab->sfpr; | |
5241 | h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 | |
5242 | + (i - lowest_restf) * 4); | |
5243 | h->type = STT_FUNC; | |
5244 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; | |
772119ce | 5245 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
82bd7b59 AM |
5246 | } |
5247 | } | |
5248 | ||
4ce794b7 | 5249 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
805fc799 | 5250 | |
eea6121a AM |
5251 | htab->sfpr->size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4 |
5252 | + (MAX_SAVE_FPR + 2 - lowest_restf) * 4); | |
82bd7b59 | 5253 | |
eea6121a | 5254 | if (htab->sfpr->size == 0) |
805fc799 | 5255 | { |
06da1e8e AM |
5256 | _bfd_strip_section_from_output (info, htab->sfpr); |
5257 | return TRUE; | |
805fc799 | 5258 | } |
82bd7b59 | 5259 | |
eea6121a | 5260 | p = bfd_alloc (htab->elf.dynobj, htab->sfpr->size); |
721956f4 | 5261 | if (p == NULL) |
b34976b6 | 5262 | return FALSE; |
721956f4 AM |
5263 | htab->sfpr->contents = p; |
5264 | ||
5265 | for (i = lowest_savef; i <= MAX_SAVE_FPR; i++) | |
5266 | { | |
5267 | unsigned int fpr = i << 21; | |
5268 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
5269 | bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p); | |
5270 | p += 4; | |
5271 | } | |
5272 | if (lowest_savef <= MAX_SAVE_FPR) | |
5273 | { | |
82bd7b59 AM |
5274 | bfd_put_32 (htab->elf.dynobj, BLR, p); |
5275 | p += 4; | |
721956f4 | 5276 | } |
82bd7b59 | 5277 | |
721956f4 AM |
5278 | for (i = lowest_restf; i <= MAX_SAVE_FPR; i++) |
5279 | { | |
5280 | unsigned int fpr = i << 21; | |
5281 | unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8; | |
5282 | bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p); | |
82bd7b59 AM |
5283 | p += 4; |
5284 | } | |
06da1e8e AM |
5285 | if (lowest_restf <= MAX_SAVE_FPR) |
5286 | bfd_put_32 (htab->elf.dynobj, BLR, p); | |
82bd7b59 | 5287 | |
b34976b6 | 5288 | return TRUE; |
e86ce104 AM |
5289 | } |
5290 | ||
5291 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
5292 | regular object. The current definition is in some section of the | |
5293 | dynamic object, but we're not including those sections. We have to | |
5294 | change the definition to something the rest of the link can | |
5295 | understand. */ | |
5296 | ||
b34976b6 | 5297 | static bfd_boolean |
4ce794b7 AM |
5298 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
5299 | struct elf_link_hash_entry *h) | |
e86ce104 AM |
5300 | { |
5301 | struct ppc_link_hash_table *htab; | |
e86ce104 AM |
5302 | asection *s; |
5303 | unsigned int power_of_two; | |
5304 | ||
5305 | htab = ppc_hash_table (info); | |
5306 | ||
5307 | /* Deal with function syms. */ | |
5308 | if (h->type == STT_FUNC | |
5309 | || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) | |
5310 | { | |
5311 | /* Clear procedure linkage table information for any symbol that | |
5312 | won't need a .plt entry. */ | |
411e1bfb AM |
5313 | struct plt_entry *ent; |
5314 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
5315 | if (ent->plt.refcount > 0) | |
5316 | break; | |
8387904d | 5317 | if (ent == NULL |
9c7a29a3 AM |
5318 | || SYMBOL_CALLS_LOCAL (info, h) |
5319 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
5320 | && h->root.type == bfd_link_hash_undefweak)) | |
40b8271b | 5321 | { |
411e1bfb | 5322 | h->plt.plist = NULL; |
40b8271b | 5323 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
40b8271b | 5324 | } |
5bd4f169 | 5325 | } |
bbd7ec4a | 5326 | else |
411e1bfb | 5327 | h->plt.plist = NULL; |
5bd4f169 AM |
5328 | |
5329 | /* If this is a weak symbol, and there is a real definition, the | |
5330 | processor independent code will have arranged for us to see the | |
5331 | real definition first, and we can just use the same value. */ | |
5332 | if (h->weakdef != NULL) | |
5333 | { | |
5334 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined | |
5335 | || h->weakdef->root.type == bfd_link_hash_defweak); | |
5336 | h->root.u.def.section = h->weakdef->root.u.def.section; | |
5337 | h->root.u.def.value = h->weakdef->root.u.def.value; | |
a23b6845 AM |
5338 | if (ELIMINATE_COPY_RELOCS) |
5339 | h->elf_link_hash_flags | |
5340 | = ((h->elf_link_hash_flags & ~ELF_LINK_NON_GOT_REF) | |
5341 | | (h->weakdef->elf_link_hash_flags & ELF_LINK_NON_GOT_REF)); | |
b34976b6 | 5342 | return TRUE; |
5bd4f169 AM |
5343 | } |
5344 | ||
5bd4f169 AM |
5345 | /* If we are creating a shared library, we must presume that the |
5346 | only references to the symbol are via the global offset table. | |
5347 | For such cases we need not do anything here; the relocations will | |
5348 | be handled correctly by relocate_section. */ | |
5349 | if (info->shared) | |
b34976b6 | 5350 | return TRUE; |
5bd4f169 | 5351 | |
65f38f15 AM |
5352 | /* If there are no references to this symbol that do not use the |
5353 | GOT, we don't need to generate a copy reloc. */ | |
5354 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) | |
b34976b6 | 5355 | return TRUE; |
65f38f15 | 5356 | |
f4656909 | 5357 | if (ELIMINATE_COPY_RELOCS) |
65f38f15 | 5358 | { |
f4656909 AM |
5359 | struct ppc_link_hash_entry * eh; |
5360 | struct ppc_dyn_relocs *p; | |
65f38f15 | 5361 | |
f4656909 AM |
5362 | eh = (struct ppc_link_hash_entry *) h; |
5363 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
5364 | { | |
5365 | s = p->sec->output_section; | |
5366 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
5367 | break; | |
5368 | } | |
5369 | ||
5370 | /* If we didn't find any dynamic relocs in read-only sections, then | |
5371 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
5372 | if (p == NULL) | |
5373 | { | |
5374 | h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF; | |
5375 | return TRUE; | |
5376 | } | |
65f38f15 AM |
5377 | } |
5378 | ||
5d35169e | 5379 | if (h->plt.plist != NULL) |
97b639ba AM |
5380 | { |
5381 | /* We should never get here, but unfortunately there are versions | |
5382 | of gcc out there that improperly (for this ABI) put initialized | |
5383 | function pointers, vtable refs and suchlike in read-only | |
5384 | sections. Allow them to proceed, but warn that this might | |
5385 | break at runtime. */ | |
5386 | (*_bfd_error_handler) | |
5387 | (_("copy reloc against `%s' requires lazy plt linking; " | |
5388 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
5389 | h->root.root.string); | |
5390 | } | |
5d35169e AM |
5391 | |
5392 | /* This is a reference to a symbol defined by a dynamic object which | |
5393 | is not a function. */ | |
5394 | ||
5bd4f169 AM |
5395 | /* We must allocate the symbol in our .dynbss section, which will |
5396 | become part of the .bss section of the executable. There will be | |
5397 | an entry for this symbol in the .dynsym section. The dynamic | |
5398 | object will contain position independent code, so all references | |
5399 | from the dynamic object to this symbol will go through the global | |
5400 | offset table. The dynamic linker will use the .dynsym entry to | |
5401 | determine the address it must put in the global offset table, so | |
5402 | both the dynamic object and the regular object will refer to the | |
5403 | same memory location for the variable. */ | |
5bd4f169 | 5404 | |
04c9666a AM |
5405 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
5406 | to copy the initial value out of the dynamic object and into the | |
5bd4f169 AM |
5407 | runtime process image. We need to remember the offset into the |
5408 | .rela.bss section we are going to use. */ | |
5409 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
5410 | { | |
eea6121a | 5411 | htab->relbss->size += sizeof (Elf64_External_Rela); |
5bd4f169 AM |
5412 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
5413 | } | |
5414 | ||
5415 | /* We need to figure out the alignment required for this symbol. I | |
5416 | have no idea how ELF linkers handle this. */ | |
5417 | power_of_two = bfd_log2 (h->size); | |
5418 | if (power_of_two > 4) | |
5419 | power_of_two = 4; | |
5420 | ||
5421 | /* Apply the required alignment. */ | |
4ce794b7 | 5422 | s = htab->dynbss; |
eea6121a | 5423 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
65f38f15 | 5424 | if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s)) |
5bd4f169 | 5425 | { |
65f38f15 | 5426 | if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two)) |
b34976b6 | 5427 | return FALSE; |
5bd4f169 AM |
5428 | } |
5429 | ||
5430 | /* Define the symbol as being at this point in the section. */ | |
5431 | h->root.u.def.section = s; | |
eea6121a | 5432 | h->root.u.def.value = s->size; |
5bd4f169 AM |
5433 | |
5434 | /* Increment the section size to make room for the symbol. */ | |
eea6121a | 5435 | s->size += h->size; |
5bd4f169 | 5436 | |
b34976b6 | 5437 | return TRUE; |
5bd4f169 AM |
5438 | } |
5439 | ||
e86ce104 AM |
5440 | /* If given a function descriptor symbol, hide both the function code |
5441 | sym and the descriptor. */ | |
5442 | static void | |
4ce794b7 AM |
5443 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
5444 | struct elf_link_hash_entry *h, | |
5445 | bfd_boolean force_local) | |
e86ce104 | 5446 | { |
34814b9f | 5447 | struct ppc_link_hash_entry *eh; |
e86ce104 AM |
5448 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
5449 | ||
34814b9f AM |
5450 | eh = (struct ppc_link_hash_entry *) h; |
5451 | if (eh->is_func_descriptor) | |
e86ce104 | 5452 | { |
34814b9f | 5453 | struct ppc_link_hash_entry *fh = eh->oh; |
e86ce104 | 5454 | |
721956f4 | 5455 | if (fh == NULL) |
d1329ca3 AM |
5456 | { |
5457 | const char *p, *q; | |
5458 | struct ppc_link_hash_table *htab; | |
5459 | char save; | |
5460 | ||
5461 | /* We aren't supposed to use alloca in BFD because on | |
5462 | systems which do not have alloca the version in libiberty | |
5463 | calls xmalloc, which might cause the program to crash | |
5464 | when it runs out of memory. This function doesn't have a | |
5465 | return status, so there's no way to gracefully return an | |
5466 | error. So cheat. We know that string[-1] can be safely | |
34814b9f AM |
5467 | accessed; It's either a string in an ELF string table, |
5468 | or allocated in an objalloc structure. */ | |
d1329ca3 | 5469 | |
34814b9f | 5470 | p = eh->elf.root.root.string - 1; |
d1329ca3 AM |
5471 | save = *p; |
5472 | *(char *) p = '.'; | |
5473 | htab = ppc_hash_table (info); | |
34814b9f AM |
5474 | fh = (struct ppc_link_hash_entry *) |
5475 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5476 | *(char *) p = save; |
5477 | ||
5478 | /* Unfortunately, if it so happens that the string we were | |
5479 | looking for was allocated immediately before this string, | |
5480 | then we overwrote the string terminator. That's the only | |
5481 | reason the lookup should fail. */ | |
5482 | if (fh == NULL) | |
5483 | { | |
34814b9f AM |
5484 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
5485 | while (q >= eh->elf.root.root.string && *q == *p) | |
d1329ca3 | 5486 | --q, --p; |
34814b9f AM |
5487 | if (q < eh->elf.root.root.string && *p == '.') |
5488 | fh = (struct ppc_link_hash_entry *) | |
5489 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
d1329ca3 AM |
5490 | } |
5491 | if (fh != NULL) | |
5492 | { | |
34814b9f AM |
5493 | eh->oh = fh; |
5494 | fh->oh = eh; | |
d1329ca3 AM |
5495 | } |
5496 | } | |
e86ce104 | 5497 | if (fh != NULL) |
34814b9f | 5498 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
e86ce104 AM |
5499 | } |
5500 | } | |
5501 | ||
411e1bfb | 5502 | static bfd_boolean |
8843416a AM |
5503 | get_sym_h (struct elf_link_hash_entry **hp, |
5504 | Elf_Internal_Sym **symp, | |
5505 | asection **symsecp, | |
5506 | char **tls_maskp, | |
5507 | Elf_Internal_Sym **locsymsp, | |
5508 | unsigned long r_symndx, | |
5509 | bfd *ibfd) | |
411e1bfb AM |
5510 | { |
5511 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
5512 | ||
5513 | if (r_symndx >= symtab_hdr->sh_info) | |
5514 | { | |
5515 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
5516 | struct elf_link_hash_entry *h; | |
5517 | ||
5518 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
5519 | while (h->root.type == bfd_link_hash_indirect | |
5520 | || h->root.type == bfd_link_hash_warning) | |
5521 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5522 | ||
5523 | if (hp != NULL) | |
5524 | *hp = h; | |
5525 | ||
5526 | if (symp != NULL) | |
5527 | *symp = NULL; | |
5528 | ||
5529 | if (symsecp != NULL) | |
5530 | { | |
5531 | asection *symsec = NULL; | |
5532 | if (h->root.type == bfd_link_hash_defined | |
5533 | || h->root.type == bfd_link_hash_defweak) | |
5534 | symsec = h->root.u.def.section; | |
5535 | *symsecp = symsec; | |
5536 | } | |
5537 | ||
e7b938ca | 5538 | if (tls_maskp != NULL) |
411e1bfb AM |
5539 | { |
5540 | struct ppc_link_hash_entry *eh; | |
5541 | ||
5542 | eh = (struct ppc_link_hash_entry *) h; | |
e7b938ca | 5543 | *tls_maskp = &eh->tls_mask; |
411e1bfb AM |
5544 | } |
5545 | } | |
5546 | else | |
5547 | { | |
5548 | Elf_Internal_Sym *sym; | |
5549 | Elf_Internal_Sym *locsyms = *locsymsp; | |
5550 | ||
5551 | if (locsyms == NULL) | |
5552 | { | |
5553 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
5554 | if (locsyms == NULL) | |
5555 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
5556 | symtab_hdr->sh_info, | |
5557 | 0, NULL, NULL, NULL); | |
5558 | if (locsyms == NULL) | |
5559 | return FALSE; | |
5560 | *locsymsp = locsyms; | |
5561 | } | |
5562 | sym = locsyms + r_symndx; | |
5563 | ||
5564 | if (hp != NULL) | |
5565 | *hp = NULL; | |
5566 | ||
5567 | if (symp != NULL) | |
5568 | *symp = sym; | |
5569 | ||
5570 | if (symsecp != NULL) | |
5571 | { | |
5572 | asection *symsec = NULL; | |
5573 | if ((sym->st_shndx != SHN_UNDEF | |
5574 | && sym->st_shndx < SHN_LORESERVE) | |
5575 | || sym->st_shndx > SHN_HIRESERVE) | |
5576 | symsec = bfd_section_from_elf_index (ibfd, sym->st_shndx); | |
5577 | *symsecp = symsec; | |
5578 | } | |
5579 | ||
e7b938ca | 5580 | if (tls_maskp != NULL) |
411e1bfb AM |
5581 | { |
5582 | struct got_entry **lgot_ents; | |
e7b938ca | 5583 | char *tls_mask; |
411e1bfb | 5584 | |
e7b938ca | 5585 | tls_mask = NULL; |
411e1bfb AM |
5586 | lgot_ents = elf_local_got_ents (ibfd); |
5587 | if (lgot_ents != NULL) | |
5588 | { | |
e7b938ca AM |
5589 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
5590 | tls_mask = &lgot_masks[r_symndx]; | |
411e1bfb | 5591 | } |
e7b938ca | 5592 | *tls_maskp = tls_mask; |
411e1bfb AM |
5593 | } |
5594 | } | |
5595 | return TRUE; | |
5596 | } | |
5597 | ||
e7b938ca | 5598 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
951fd09b | 5599 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
ad8e1ba5 | 5600 | type suitable for optimization, and 1 otherwise. */ |
951fd09b AM |
5601 | |
5602 | static int | |
0d4792f7 AM |
5603 | get_tls_mask (char **tls_maskp, unsigned long *toc_symndx, |
5604 | Elf_Internal_Sym **locsymsp, | |
4ce794b7 | 5605 | const Elf_Internal_Rela *rel, bfd *ibfd) |
411e1bfb AM |
5606 | { |
5607 | unsigned long r_symndx; | |
0d4792f7 | 5608 | int next_r; |
411e1bfb AM |
5609 | struct elf_link_hash_entry *h; |
5610 | Elf_Internal_Sym *sym; | |
5611 | asection *sec; | |
5612 | bfd_vma off; | |
5613 | ||
5614 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 5615 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5616 | return 0; |
411e1bfb | 5617 | |
e7b938ca | 5618 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
411e1bfb AM |
5619 | || sec == NULL |
5620 | || ppc64_elf_section_data (sec)->t_symndx == NULL) | |
951fd09b | 5621 | return 1; |
411e1bfb AM |
5622 | |
5623 | /* Look inside a TOC section too. */ | |
5624 | if (h != NULL) | |
5625 | { | |
5626 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
5627 | off = h->root.u.def.value; | |
5628 | } | |
5629 | else | |
5630 | off = sym->st_value; | |
5631 | off += rel->r_addend; | |
5632 | BFD_ASSERT (off % 8 == 0); | |
5633 | r_symndx = ppc64_elf_section_data (sec)->t_symndx[off / 8]; | |
951fd09b | 5634 | next_r = ppc64_elf_section_data (sec)->t_symndx[off / 8 + 1]; |
e7b938ca | 5635 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
951fd09b | 5636 | return 0; |
0d4792f7 AM |
5637 | if (toc_symndx != NULL) |
5638 | *toc_symndx = r_symndx; | |
5639 | if ((h == NULL | |
5640 | || ((h->root.type == bfd_link_hash_defined | |
5641 | || h->root.type == bfd_link_hash_defweak) | |
5642 | && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) | |
5643 | && (next_r == -1 || next_r == -2)) | |
5644 | return 1 - next_r; | |
951fd09b | 5645 | return 1; |
411e1bfb AM |
5646 | } |
5647 | ||
754021d0 | 5648 | /* Adjust all global syms defined in opd sections. In gcc generated |
8387904d | 5649 | code for the old ABI, these will already have been done. */ |
754021d0 AM |
5650 | |
5651 | static bfd_boolean | |
5652 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
5653 | { | |
5654 | struct ppc_link_hash_entry *eh; | |
5655 | asection *sym_sec; | |
5656 | long *opd_adjust; | |
5657 | ||
5658 | if (h->root.type == bfd_link_hash_indirect) | |
5659 | return TRUE; | |
5660 | ||
5661 | if (h->root.type == bfd_link_hash_warning) | |
5662 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
5663 | ||
5664 | if (h->root.type != bfd_link_hash_defined | |
5665 | && h->root.type != bfd_link_hash_defweak) | |
5666 | return TRUE; | |
5667 | ||
5668 | eh = (struct ppc_link_hash_entry *) h; | |
5669 | if (eh->adjust_done) | |
5670 | return TRUE; | |
5671 | ||
5672 | sym_sec = eh->elf.root.u.def.section; | |
4025353c AM |
5673 | opd_adjust = get_opd_info (sym_sec); |
5674 | if (opd_adjust != NULL) | |
754021d0 | 5675 | { |
3f764659 | 5676 | long adjust = opd_adjust[eh->elf.root.u.def.value / 8]; |
4025353c AM |
5677 | if (adjust == -1) |
5678 | { | |
5679 | /* This entry has been deleted. */ | |
81688140 AM |
5680 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
5681 | if (dsec == NULL) | |
5682 | { | |
5683 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
5684 | if (elf_discarded_section (dsec)) | |
5685 | { | |
5686 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; | |
5687 | break; | |
5688 | } | |
5689 | } | |
4025353c | 5690 | eh->elf.root.u.def.value = 0; |
81688140 | 5691 | eh->elf.root.u.def.section = dsec; |
4025353c AM |
5692 | } |
5693 | else | |
5694 | eh->elf.root.u.def.value += adjust; | |
754021d0 AM |
5695 | eh->adjust_done = 1; |
5696 | } | |
5697 | return TRUE; | |
5698 | } | |
5699 | ||
5700 | /* Remove unused Official Procedure Descriptor entries. Currently we | |
5701 | only remove those associated with functions in discarded link-once | |
5702 | sections, or weakly defined functions that have been overridden. It | |
5703 | would be possible to remove many more entries for statically linked | |
5704 | applications. */ | |
5705 | ||
b34976b6 | 5706 | bfd_boolean |
3f764659 JJ |
5707 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
5708 | bfd_boolean non_overlapping) | |
1e2f5b6e AM |
5709 | { |
5710 | bfd *ibfd; | |
754021d0 | 5711 | bfd_boolean some_edited = FALSE; |
3f764659 | 5712 | asection *need_pad = NULL; |
1e2f5b6e | 5713 | |
411e1bfb | 5714 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
1e2f5b6e AM |
5715 | { |
5716 | asection *sec; | |
5717 | Elf_Internal_Rela *relstart, *rel, *relend; | |
5718 | Elf_Internal_Shdr *symtab_hdr; | |
6cdc0ccc | 5719 | Elf_Internal_Sym *local_syms; |
1e2f5b6e AM |
5720 | struct elf_link_hash_entry **sym_hashes; |
5721 | bfd_vma offset; | |
d6fe2dc1 | 5722 | bfd_size_type amt; |
4025353c | 5723 | long *opd_adjust; |
3f764659 JJ |
5724 | bfd_boolean need_edit, add_aux_fields; |
5725 | bfd_size_type cnt_16b = 0; | |
1e2f5b6e AM |
5726 | |
5727 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
5728 | if (sec == NULL) | |
5729 | continue; | |
5730 | ||
3f764659 | 5731 | amt = sec->size * sizeof (long) / 8; |
4025353c AM |
5732 | opd_adjust = get_opd_info (sec); |
5733 | if (opd_adjust == NULL) | |
d6fe2dc1 AM |
5734 | { |
5735 | /* Must be a ld -r link. ie. check_relocs hasn't been | |
5736 | called. */ | |
4025353c AM |
5737 | opd_adjust = bfd_zalloc (obfd, amt); |
5738 | ppc64_elf_section_data (sec)->opd.adjust = opd_adjust; | |
d6fe2dc1 | 5739 | } |
4025353c | 5740 | memset (opd_adjust, 0, amt); |
1e2f5b6e AM |
5741 | |
5742 | if (sec->output_section == bfd_abs_section_ptr) | |
5743 | continue; | |
5744 | ||
5745 | /* Look through the section relocs. */ | |
5746 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
5747 | continue; | |
5748 | ||
6cdc0ccc | 5749 | local_syms = NULL; |
1e2f5b6e AM |
5750 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
5751 | sym_hashes = elf_sym_hashes (ibfd); | |
5752 | ||
5753 | /* Read the relocations. */ | |
4ce794b7 | 5754 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 5755 | info->keep_memory); |
1e2f5b6e | 5756 | if (relstart == NULL) |
b34976b6 | 5757 | return FALSE; |
1e2f5b6e AM |
5758 | |
5759 | /* First run through the relocs to check they are sane, and to | |
5760 | determine whether we need to edit this opd section. */ | |
b34976b6 | 5761 | need_edit = FALSE; |
3f764659 | 5762 | need_pad = sec; |
1e2f5b6e AM |
5763 | offset = 0; |
5764 | relend = relstart + sec->reloc_count; | |
50bc7936 | 5765 | for (rel = relstart; rel < relend; ) |
1e2f5b6e | 5766 | { |
04c9666a | 5767 | enum elf_ppc64_reloc_type r_type; |
1e2f5b6e AM |
5768 | unsigned long r_symndx; |
5769 | asection *sym_sec; | |
5770 | struct elf_link_hash_entry *h; | |
5771 | Elf_Internal_Sym *sym; | |
5772 | ||
3f764659 | 5773 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
1e2f5b6e AM |
5774 | only interested in the reloc pointing to a function entry |
5775 | point. */ | |
50bc7936 AM |
5776 | if (rel->r_offset != offset |
5777 | || rel + 1 >= relend | |
5778 | || (rel + 1)->r_offset != offset + 8) | |
1e2f5b6e AM |
5779 | { |
5780 | /* If someone messes with .opd alignment then after a | |
5781 | "ld -r" we might have padding in the middle of .opd. | |
5782 | Also, there's nothing to prevent someone putting | |
5783 | something silly in .opd with the assembler. No .opd | |
b34976b6 | 5784 | optimization for them! */ |
3f764659 | 5785 | broken_opd: |
1e2f5b6e | 5786 | (*_bfd_error_handler) |
d003868e | 5787 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
b34976b6 | 5788 | need_edit = FALSE; |
1e2f5b6e AM |
5789 | break; |
5790 | } | |
5791 | ||
50bc7936 AM |
5792 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
5793 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
5794 | { | |
5795 | (*_bfd_error_handler) | |
d003868e AM |
5796 | (_("%B: unexpected reloc type %u in .opd section"), |
5797 | ibfd, r_type); | |
50bc7936 AM |
5798 | need_edit = FALSE; |
5799 | break; | |
5800 | } | |
5801 | ||
1e2f5b6e | 5802 | r_symndx = ELF64_R_SYM (rel->r_info); |
411e1bfb AM |
5803 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
5804 | r_symndx, ibfd)) | |
50bc7936 | 5805 | goto error_ret; |
1e2f5b6e AM |
5806 | |
5807 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
5808 | { | |
411e1bfb AM |
5809 | const char *sym_name; |
5810 | if (h != NULL) | |
5811 | sym_name = h->root.root.string; | |
5812 | else | |
5813 | sym_name = bfd_elf_local_sym_name (ibfd, sym); | |
5814 | ||
1e2f5b6e | 5815 | (*_bfd_error_handler) |
d003868e AM |
5816 | (_("%B: undefined sym `%s' in .opd section"), |
5817 | ibfd, sym_name); | |
b34976b6 | 5818 | need_edit = FALSE; |
1e2f5b6e AM |
5819 | break; |
5820 | } | |
5821 | ||
51020317 AM |
5822 | /* opd entries are always for functions defined in the |
5823 | current input bfd. If the symbol isn't defined in the | |
5824 | input bfd, then we won't be using the function in this | |
5825 | bfd; It must be defined in a linkonce section in another | |
5826 | bfd, or is weak. It's also possible that we are | |
5827 | discarding the function due to a linker script /DISCARD/, | |
5828 | which we test for via the output_section. */ | |
5829 | if (sym_sec->owner != ibfd | |
5830 | || sym_sec->output_section == bfd_abs_section_ptr) | |
b34976b6 | 5831 | need_edit = TRUE; |
1e2f5b6e | 5832 | |
50bc7936 | 5833 | rel += 2; |
3f764659 JJ |
5834 | if (rel == relend |
5835 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
5836 | { | |
5837 | if (sec->size == offset + 24) | |
5838 | { | |
5839 | need_pad = NULL; | |
5840 | break; | |
5841 | } | |
5842 | if (rel == relend && sec->size == offset + 16) | |
5843 | { | |
5844 | cnt_16b++; | |
5845 | break; | |
5846 | } | |
5847 | goto broken_opd; | |
5848 | } | |
5849 | ||
5850 | if (rel->r_offset == offset + 24) | |
5851 | offset += 24; | |
5852 | else if (rel->r_offset != offset + 16) | |
5853 | goto broken_opd; | |
5854 | else if (rel + 1 < relend | |
5855 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
5856 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
5857 | { | |
5858 | offset += 16; | |
5859 | cnt_16b++; | |
5860 | } | |
5861 | else if (rel + 2 < relend | |
5862 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
5863 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
5864 | { | |
5865 | offset += 24; | |
5866 | rel += 1; | |
5867 | } | |
5868 | else | |
5869 | goto broken_opd; | |
1e2f5b6e AM |
5870 | } |
5871 | ||
3f764659 JJ |
5872 | add_aux_fields = non_overlapping && cnt_16b > 0; |
5873 | ||
5874 | if (need_edit || add_aux_fields) | |
1e2f5b6e AM |
5875 | { |
5876 | Elf_Internal_Rela *write_rel; | |
5877 | bfd_byte *rptr, *wptr; | |
3f764659 | 5878 | bfd_byte *new_contents = NULL; |
b34976b6 | 5879 | bfd_boolean skip; |
3f764659 | 5880 | long opd_ent_size; |
1e2f5b6e AM |
5881 | |
5882 | /* This seems a waste of time as input .opd sections are all | |
5883 | zeros as generated by gcc, but I suppose there's no reason | |
5884 | this will always be so. We might start putting something in | |
5885 | the third word of .opd entries. */ | |
5886 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
5887 | { | |
eea6121a AM |
5888 | bfd_byte *loc; |
5889 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
6cdc0ccc | 5890 | { |
eea6121a AM |
5891 | if (loc != NULL) |
5892 | free (loc); | |
50bc7936 | 5893 | error_ret: |
6cdc0ccc AM |
5894 | if (local_syms != NULL |
5895 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
5896 | free (local_syms); | |
6cdc0ccc AM |
5897 | if (elf_section_data (sec)->relocs != relstart) |
5898 | free (relstart); | |
b34976b6 | 5899 | return FALSE; |
6cdc0ccc | 5900 | } |
1e2f5b6e AM |
5901 | sec->contents = loc; |
5902 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
5903 | } | |
5904 | ||
5905 | elf_section_data (sec)->relocs = relstart; | |
5906 | ||
5907 | wptr = sec->contents; | |
5908 | rptr = sec->contents; | |
3f764659 JJ |
5909 | new_contents = sec->contents; |
5910 | ||
5911 | if (add_aux_fields) | |
5912 | { | |
5913 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
5914 | if (new_contents == NULL) | |
5915 | return FALSE; | |
5916 | need_pad = FALSE; | |
5917 | wptr = new_contents; | |
5918 | } | |
5919 | ||
1e2f5b6e | 5920 | write_rel = relstart; |
b34976b6 | 5921 | skip = FALSE; |
1e2f5b6e | 5922 | offset = 0; |
3f764659 | 5923 | opd_ent_size = 0; |
1e2f5b6e AM |
5924 | for (rel = relstart; rel < relend; rel++) |
5925 | { | |
50bc7936 AM |
5926 | unsigned long r_symndx; |
5927 | asection *sym_sec; | |
5928 | struct elf_link_hash_entry *h; | |
5929 | Elf_Internal_Sym *sym; | |
5930 | ||
5931 | r_symndx = ELF64_R_SYM (rel->r_info); | |
5932 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
d37c89e5 | 5933 | r_symndx, ibfd)) |
50bc7936 AM |
5934 | goto error_ret; |
5935 | ||
1e2f5b6e AM |
5936 | if (rel->r_offset == offset) |
5937 | { | |
50bc7936 | 5938 | struct ppc_link_hash_entry *fdh = NULL; |
3f764659 JJ |
5939 | |
5940 | /* See if the .opd entry is full 24 byte or | |
5941 | 16 byte (with fd_aux entry overlapped with next | |
5942 | fd_func). */ | |
5943 | opd_ent_size = 24; | |
5944 | if ((rel + 2 == relend && sec->size == offset + 16) | |
5945 | || (rel + 3 < relend | |
5946 | && rel[2].r_offset == offset + 16 | |
5947 | && rel[3].r_offset == offset + 24 | |
5948 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
5949 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
5950 | opd_ent_size = 16; | |
5951 | ||
4025353c AM |
5952 | if (h != NULL |
5953 | && h->root.root.string[0] == '.') | |
50bc7936 AM |
5954 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, |
5955 | ppc_hash_table (info)); | |
1e2f5b6e | 5956 | |
51020317 AM |
5957 | skip = (sym_sec->owner != ibfd |
5958 | || sym_sec->output_section == bfd_abs_section_ptr); | |
a4aa0fb7 AM |
5959 | if (skip) |
5960 | { | |
4025353c | 5961 | if (fdh != NULL && sym_sec->owner == ibfd) |
a4aa0fb7 AM |
5962 | { |
5963 | /* Arrange for the function descriptor sym | |
5964 | to be dropped. */ | |
d6fe2dc1 AM |
5965 | fdh->elf.root.u.def.value = 0; |
5966 | fdh->elf.root.u.def.section = sym_sec; | |
a4aa0fb7 | 5967 | } |
3f764659 | 5968 | opd_adjust[rel->r_offset / 8] = -1; |
a4aa0fb7 AM |
5969 | } |
5970 | else | |
1e2f5b6e AM |
5971 | { |
5972 | /* We'll be keeping this opd entry. */ | |
5973 | ||
4025353c | 5974 | if (fdh != NULL) |
1e2f5b6e | 5975 | { |
754021d0 AM |
5976 | /* Redefine the function descriptor symbol to |
5977 | this location in the opd section. It is | |
5978 | necessary to update the value here rather | |
5979 | than using an array of adjustments as we do | |
5980 | for local symbols, because various places | |
5981 | in the generic ELF code use the value | |
5982 | stored in u.def.value. */ | |
3f764659 | 5983 | fdh->elf.root.u.def.value = wptr - new_contents; |
754021d0 | 5984 | fdh->adjust_done = 1; |
1e2f5b6e | 5985 | } |
754021d0 AM |
5986 | |
5987 | /* Local syms are a bit tricky. We could | |
5988 | tweak them as they can be cached, but | |
5989 | we'd need to look through the local syms | |
5990 | for the function descriptor sym which we | |
5991 | don't have at the moment. So keep an | |
5992 | array of adjustments. */ | |
3f764659 JJ |
5993 | opd_adjust[rel->r_offset / 8] |
5994 | = (wptr - new_contents) - (rptr - sec->contents); | |
1e2f5b6e AM |
5995 | |
5996 | if (wptr != rptr) | |
3f764659 JJ |
5997 | memcpy (wptr, rptr, opd_ent_size); |
5998 | wptr += opd_ent_size; | |
5999 | if (add_aux_fields && opd_ent_size == 16) | |
6000 | { | |
6001 | memset (wptr, '\0', 8); | |
6002 | wptr += 8; | |
6003 | } | |
1e2f5b6e | 6004 | } |
3f764659 JJ |
6005 | rptr += opd_ent_size; |
6006 | offset += opd_ent_size; | |
1e2f5b6e AM |
6007 | } |
6008 | ||
50bc7936 AM |
6009 | if (skip) |
6010 | { | |
6011 | BFD_ASSERT (MUST_BE_DYN_RELOC (ELF64_R_TYPE (rel->r_info))); | |
6012 | if (info->shared) | |
6013 | { | |
6014 | /* We won't be needing dynamic relocs here. */ | |
6015 | struct ppc_dyn_relocs **pp; | |
6016 | struct ppc_dyn_relocs *p; | |
6017 | ||
6018 | if (h != NULL) | |
6019 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
6020 | else if (sym_sec != NULL) | |
6021 | pp = ((struct ppc_dyn_relocs **) | |
6022 | &elf_section_data (sym_sec)->local_dynrel); | |
6023 | else | |
6024 | pp = ((struct ppc_dyn_relocs **) | |
6025 | &elf_section_data (sec)->local_dynrel); | |
6026 | while ((p = *pp) != NULL) | |
6027 | { | |
6028 | if (p->sec == sec) | |
6029 | { | |
6030 | p->count -= 1; | |
6031 | if (p->count == 0) | |
d37c89e5 | 6032 | *pp = p->next; |
50bc7936 AM |
6033 | break; |
6034 | } | |
6035 | pp = &p->next; | |
6036 | } | |
6037 | } | |
6038 | } | |
6039 | else | |
1e2f5b6e | 6040 | { |
50bc7936 AM |
6041 | /* We need to adjust any reloc offsets to point to the |
6042 | new opd entries. While we're at it, we may as well | |
6043 | remove redundant relocs. */ | |
3f764659 | 6044 | rel->r_offset += opd_adjust[(offset - opd_ent_size) / 8]; |
1e2f5b6e AM |
6045 | if (write_rel != rel) |
6046 | memcpy (write_rel, rel, sizeof (*rel)); | |
6047 | ++write_rel; | |
6048 | } | |
6049 | } | |
6050 | ||
3f764659 | 6051 | sec->size = wptr - new_contents; |
1e2f5b6e | 6052 | sec->reloc_count = write_rel - relstart; |
3f764659 JJ |
6053 | if (add_aux_fields) |
6054 | { | |
6055 | free (sec->contents); | |
6056 | sec->contents = new_contents; | |
6057 | } | |
6058 | ||
cdcf6e38 AM |
6059 | /* Fudge the size too, as this is used later in |
6060 | elf_bfd_final_link if we are emitting relocs. */ | |
6061 | elf_section_data (sec)->rel_hdr.sh_size | |
6062 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
6063 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
754021d0 | 6064 | some_edited = TRUE; |
1e2f5b6e | 6065 | } |
6cdc0ccc | 6066 | else if (elf_section_data (sec)->relocs != relstart) |
1e2f5b6e | 6067 | free (relstart); |
6cdc0ccc | 6068 | |
411e1bfb AM |
6069 | if (local_syms != NULL |
6070 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
6071 | { | |
6072 | if (!info->keep_memory) | |
6073 | free (local_syms); | |
6074 | else | |
6075 | symtab_hdr->contents = (unsigned char *) local_syms; | |
6076 | } | |
6077 | } | |
6078 | ||
754021d0 AM |
6079 | if (some_edited) |
6080 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
6081 | ||
3f764659 JJ |
6082 | /* If we are doing a final link and the last .opd entry is just 16 byte |
6083 | long, add a 8 byte padding after it. */ | |
6084 | if (need_pad != NULL && !info->relocatable) | |
6085 | { | |
6086 | bfd_byte *p; | |
6087 | ||
6088 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
6089 | { | |
6090 | BFD_ASSERT (need_pad->size > 0); | |
6091 | ||
6092 | p = bfd_malloc (need_pad->size + 8); | |
6093 | if (p == NULL) | |
6094 | return FALSE; | |
6095 | ||
6096 | if (! bfd_get_section_contents (need_pad->owner, need_pad, | |
6097 | p, 0, need_pad->size)) | |
6098 | return FALSE; | |
6099 | ||
6100 | need_pad->contents = p; | |
6101 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
6102 | } | |
6103 | else | |
6104 | { | |
6105 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
6106 | if (p == NULL) | |
6107 | return FALSE; | |
6108 | ||
6109 | need_pad->contents = p; | |
6110 | } | |
6111 | ||
6112 | memset (need_pad->contents + need_pad->size, 0, 8); | |
6113 | need_pad->size += 8; | |
6114 | } | |
6115 | ||
411e1bfb AM |
6116 | return TRUE; |
6117 | } | |
6118 | ||
e1918d23 | 6119 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
411e1bfb | 6120 | |
e1918d23 | 6121 | asection * |
4ce794b7 | 6122 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
411e1bfb | 6123 | { |
411e1bfb AM |
6124 | struct ppc_link_hash_table *htab; |
6125 | ||
411e1bfb | 6126 | htab = ppc_hash_table (info); |
a48ebf4d AM |
6127 | if (htab->tls_get_addr != NULL) |
6128 | { | |
8387904d | 6129 | struct ppc_link_hash_entry *h = htab->tls_get_addr; |
a48ebf4d | 6130 | |
8387904d AM |
6131 | while (h->elf.root.type == bfd_link_hash_indirect |
6132 | || h->elf.root.type == bfd_link_hash_warning) | |
6133 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
a48ebf4d AM |
6134 | |
6135 | htab->tls_get_addr = h; | |
8387904d AM |
6136 | |
6137 | if (htab->tls_get_addr_fd == NULL | |
6138 | && h->oh != NULL | |
6139 | && h->oh->is_func_descriptor) | |
6140 | htab->tls_get_addr_fd = h->oh; | |
6141 | } | |
6142 | ||
6143 | if (htab->tls_get_addr_fd != NULL) | |
6144 | { | |
6145 | struct ppc_link_hash_entry *h = htab->tls_get_addr_fd; | |
6146 | ||
6147 | while (h->elf.root.type == bfd_link_hash_indirect | |
6148 | || h->elf.root.type == bfd_link_hash_warning) | |
6149 | h = (struct ppc_link_hash_entry *) h->elf.root.u.i.link; | |
6150 | ||
6151 | htab->tls_get_addr_fd = h; | |
a48ebf4d AM |
6152 | } |
6153 | ||
e1918d23 | 6154 | return _bfd_elf_tls_setup (obfd, info); |
951fd09b | 6155 | } |
411e1bfb | 6156 | |
951fd09b AM |
6157 | /* Run through all the TLS relocs looking for optimization |
6158 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
6159 | a preliminary section layout so that we know the TLS segment | |
6160 | offsets. We can't optimize earlier because some optimizations need | |
6161 | to know the tp offset, and we need to optimize before allocating | |
6162 | dynamic relocations. */ | |
6163 | ||
6164 | bfd_boolean | |
4ce794b7 | 6165 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
951fd09b AM |
6166 | { |
6167 | bfd *ibfd; | |
6168 | asection *sec; | |
6169 | struct ppc_link_hash_table *htab; | |
6170 | ||
1049f94e | 6171 | if (info->relocatable || info->shared) |
411e1bfb AM |
6172 | return TRUE; |
6173 | ||
951fd09b | 6174 | htab = ppc_hash_table (info); |
411e1bfb AM |
6175 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6176 | { | |
6177 | Elf_Internal_Sym *locsyms = NULL; | |
6178 | ||
6179 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
6180 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
6181 | { | |
6182 | Elf_Internal_Rela *relstart, *rel, *relend; | |
6183 | int expecting_tls_get_addr; | |
6184 | ||
6185 | /* Read the relocations. */ | |
4ce794b7 | 6186 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
45d6a902 | 6187 | info->keep_memory); |
411e1bfb AM |
6188 | if (relstart == NULL) |
6189 | return FALSE; | |
6190 | ||
6191 | expecting_tls_get_addr = 0; | |
6192 | relend = relstart + sec->reloc_count; | |
6193 | for (rel = relstart; rel < relend; rel++) | |
6194 | { | |
6195 | enum elf_ppc64_reloc_type r_type; | |
6196 | unsigned long r_symndx; | |
6197 | struct elf_link_hash_entry *h; | |
6198 | Elf_Internal_Sym *sym; | |
6199 | asection *sym_sec; | |
e7b938ca AM |
6200 | char *tls_mask; |
6201 | char tls_set, tls_clear, tls_type = 0; | |
411e1bfb | 6202 | bfd_vma value; |
951fd09b | 6203 | bfd_boolean ok_tprel, is_local; |
411e1bfb AM |
6204 | |
6205 | r_symndx = ELF64_R_SYM (rel->r_info); | |
e7b938ca | 6206 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, |
411e1bfb AM |
6207 | r_symndx, ibfd)) |
6208 | { | |
6209 | err_free_rel: | |
6210 | if (elf_section_data (sec)->relocs != relstart) | |
6211 | free (relstart); | |
6212 | if (locsyms != NULL | |
6213 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6214 | != (unsigned char *) locsyms)) | |
6215 | free (locsyms); | |
6216 | return FALSE; | |
6217 | } | |
6218 | ||
6219 | if (h != NULL) | |
6220 | { | |
6221 | if (h->root.type != bfd_link_hash_defined | |
6222 | && h->root.type != bfd_link_hash_defweak) | |
6223 | continue; | |
6224 | value = h->root.u.def.value; | |
6225 | } | |
6226 | else | |
4025353c AM |
6227 | /* Symbols referenced by TLS relocs must be of type |
6228 | STT_TLS. So no need for .opd local sym adjust. */ | |
6229 | value = sym->st_value; | |
951fd09b | 6230 | |
411e1bfb | 6231 | ok_tprel = FALSE; |
951fd09b AM |
6232 | is_local = FALSE; |
6233 | if (h == NULL | |
6234 | || !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
411e1bfb | 6235 | { |
951fd09b | 6236 | is_local = TRUE; |
411e1bfb AM |
6237 | value += sym_sec->output_offset; |
6238 | value += sym_sec->output_section->vma; | |
e1918d23 | 6239 | value -= htab->elf.tls_sec->vma; |
411e1bfb AM |
6240 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) |
6241 | < (bfd_vma) 1 << 32); | |
6242 | } | |
6243 | ||
4ce794b7 | 6244 | r_type = ELF64_R_TYPE (rel->r_info); |
411e1bfb AM |
6245 | switch (r_type) |
6246 | { | |
6247 | case R_PPC64_GOT_TLSLD16: | |
6248 | case R_PPC64_GOT_TLSLD16_LO: | |
6249 | case R_PPC64_GOT_TLSLD16_HI: | |
6250 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b AM |
6251 | /* These relocs should never be against a symbol |
6252 | defined in a shared lib. Leave them alone if | |
6253 | that turns out to be the case. */ | |
e717da7e | 6254 | ppc64_tlsld_got (ibfd)->refcount -= 1; |
951fd09b AM |
6255 | if (!is_local) |
6256 | continue; | |
6257 | ||
951fd09b AM |
6258 | /* LD -> LE */ |
6259 | tls_set = 0; | |
6260 | tls_clear = TLS_LD; | |
e7b938ca | 6261 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
6262 | expecting_tls_get_addr = 1; |
6263 | break; | |
6264 | ||
6265 | case R_PPC64_GOT_TLSGD16: | |
6266 | case R_PPC64_GOT_TLSGD16_LO: | |
6267 | case R_PPC64_GOT_TLSGD16_HI: | |
6268 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 6269 | if (ok_tprel) |
411e1bfb AM |
6270 | /* GD -> LE */ |
6271 | tls_set = 0; | |
6272 | else | |
6273 | /* GD -> IE */ | |
951fd09b AM |
6274 | tls_set = TLS_TLS | TLS_TPRELGD; |
6275 | tls_clear = TLS_GD; | |
e7b938ca | 6276 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
6277 | expecting_tls_get_addr = 1; |
6278 | break; | |
6279 | ||
6280 | case R_PPC64_GOT_TPREL16_DS: | |
6281 | case R_PPC64_GOT_TPREL16_LO_DS: | |
6282 | case R_PPC64_GOT_TPREL16_HI: | |
6283 | case R_PPC64_GOT_TPREL16_HA: | |
6284 | expecting_tls_get_addr = 0; | |
6285 | if (ok_tprel) | |
6286 | { | |
6287 | /* IE -> LE */ | |
6288 | tls_set = 0; | |
6289 | tls_clear = TLS_TPREL; | |
e7b938ca | 6290 | tls_type = TLS_TLS | TLS_TPREL; |
411e1bfb AM |
6291 | break; |
6292 | } | |
6293 | else | |
6294 | continue; | |
6295 | ||
6296 | case R_PPC64_REL14: | |
6297 | case R_PPC64_REL14_BRTAKEN: | |
6298 | case R_PPC64_REL14_BRNTAKEN: | |
6299 | case R_PPC64_REL24: | |
6300 | if (h != NULL | |
8387904d AM |
6301 | && (h == &htab->tls_get_addr->elf |
6302 | || h == &htab->tls_get_addr_fd->elf)) | |
411e1bfb AM |
6303 | { |
6304 | if (!expecting_tls_get_addr | |
6305 | && rel != relstart | |
6306 | && ((ELF64_R_TYPE (rel[-1].r_info) | |
6307 | == R_PPC64_TOC16) | |
6308 | || (ELF64_R_TYPE (rel[-1].r_info) | |
6309 | == R_PPC64_TOC16_LO))) | |
6310 | { | |
6311 | /* Check for toc tls entries. */ | |
6312 | char *toc_tls; | |
951fd09b | 6313 | int retval; |
411e1bfb | 6314 | |
0d4792f7 | 6315 | retval = get_tls_mask (&toc_tls, NULL, &locsyms, |
951fd09b AM |
6316 | rel - 1, ibfd); |
6317 | if (retval == 0) | |
411e1bfb AM |
6318 | goto err_free_rel; |
6319 | if (toc_tls != NULL) | |
951fd09b | 6320 | expecting_tls_get_addr = retval > 1; |
411e1bfb AM |
6321 | } |
6322 | ||
6323 | if (expecting_tls_get_addr) | |
6324 | { | |
6325 | struct plt_entry *ent; | |
6326 | for (ent = h->plt.plist; ent; ent = ent->next) | |
6327 | if (ent->addend == 0) | |
6328 | { | |
6329 | if (ent->plt.refcount > 0) | |
6330 | ent->plt.refcount -= 1; | |
6331 | break; | |
6332 | } | |
6333 | } | |
6334 | } | |
6335 | expecting_tls_get_addr = 0; | |
6336 | continue; | |
6337 | ||
6338 | case R_PPC64_TPREL64: | |
6339 | expecting_tls_get_addr = 0; | |
6340 | if (ok_tprel) | |
6341 | { | |
6342 | /* IE -> LE */ | |
6343 | tls_set = TLS_EXPLICIT; | |
6344 | tls_clear = TLS_TPREL; | |
6345 | break; | |
6346 | } | |
6347 | else | |
6348 | continue; | |
6349 | ||
6350 | case R_PPC64_DTPMOD64: | |
6351 | expecting_tls_get_addr = 0; | |
951fd09b AM |
6352 | if (rel + 1 < relend |
6353 | && (rel[1].r_info | |
6354 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
6355 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 6356 | { |
951fd09b | 6357 | if (ok_tprel) |
411e1bfb | 6358 | /* GD -> LE */ |
951fd09b | 6359 | tls_set = TLS_EXPLICIT | TLS_GD; |
411e1bfb AM |
6360 | else |
6361 | /* GD -> IE */ | |
951fd09b AM |
6362 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; |
6363 | tls_clear = TLS_GD; | |
411e1bfb AM |
6364 | } |
6365 | else | |
6366 | { | |
951fd09b AM |
6367 | if (!is_local) |
6368 | continue; | |
6369 | ||
6370 | /* LD -> LE */ | |
6371 | tls_set = TLS_EXPLICIT; | |
6372 | tls_clear = TLS_LD; | |
411e1bfb AM |
6373 | } |
6374 | break; | |
6375 | ||
6376 | default: | |
6377 | expecting_tls_get_addr = 0; | |
6378 | continue; | |
6379 | } | |
6380 | ||
6381 | if ((tls_set & TLS_EXPLICIT) == 0) | |
6382 | { | |
6383 | struct got_entry *ent; | |
6384 | ||
6385 | /* Adjust got entry for this reloc. */ | |
6386 | if (h != NULL) | |
6387 | ent = h->got.glist; | |
6388 | else | |
6389 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
6390 | ||
6391 | for (; ent != NULL; ent = ent->next) | |
6392 | if (ent->addend == rel->r_addend | |
e717da7e | 6393 | && ent->owner == ibfd |
e7b938ca | 6394 | && ent->tls_type == tls_type) |
411e1bfb AM |
6395 | break; |
6396 | if (ent == NULL) | |
6397 | abort (); | |
6398 | ||
6399 | if (tls_set == 0) | |
6400 | { | |
6401 | /* We managed to get rid of a got entry. */ | |
6402 | if (ent->got.refcount > 0) | |
6403 | ent->got.refcount -= 1; | |
6404 | } | |
411e1bfb AM |
6405 | } |
6406 | else if (h != NULL) | |
6407 | { | |
6408 | struct ppc_link_hash_entry * eh; | |
6409 | struct ppc_dyn_relocs **pp; | |
6410 | struct ppc_dyn_relocs *p; | |
6411 | ||
6412 | /* Adjust dynamic relocs. */ | |
6413 | eh = (struct ppc_link_hash_entry *) h; | |
6414 | for (pp = &eh->dyn_relocs; | |
6415 | (p = *pp) != NULL; | |
6416 | pp = &p->next) | |
6417 | if (p->sec == sec) | |
6418 | { | |
6419 | /* If we got rid of a DTPMOD/DTPREL reloc | |
6420 | pair then we'll lose one or two dyn | |
6421 | relocs. */ | |
951fd09b | 6422 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
411e1bfb | 6423 | p->count -= 1; |
951fd09b | 6424 | p->count -= 1; |
411e1bfb AM |
6425 | if (p->count == 0) |
6426 | *pp = p->next; | |
6427 | break; | |
6428 | } | |
6429 | } | |
6430 | ||
e7b938ca AM |
6431 | *tls_mask |= tls_set; |
6432 | *tls_mask &= ~tls_clear; | |
411e1bfb AM |
6433 | } |
6434 | ||
6435 | if (elf_section_data (sec)->relocs != relstart) | |
6436 | free (relstart); | |
6437 | } | |
6438 | ||
6439 | if (locsyms != NULL | |
6440 | && (elf_tdata (ibfd)->symtab_hdr.contents | |
6441 | != (unsigned char *) locsyms)) | |
6cdc0ccc AM |
6442 | { |
6443 | if (!info->keep_memory) | |
411e1bfb | 6444 | free (locsyms); |
6cdc0ccc | 6445 | else |
411e1bfb | 6446 | elf_tdata (ibfd)->symtab_hdr.contents = (unsigned char *) locsyms; |
6cdc0ccc | 6447 | } |
1e2f5b6e | 6448 | } |
b34976b6 | 6449 | return TRUE; |
1e2f5b6e | 6450 | } |
b34976b6 | 6451 | |
65f38f15 AM |
6452 | /* Allocate space in .plt, .got and associated reloc sections for |
6453 | dynamic relocs. */ | |
5bd4f169 | 6454 | |
b34976b6 | 6455 | static bfd_boolean |
4ce794b7 | 6456 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
5bd4f169 | 6457 | { |
65f38f15 AM |
6458 | struct bfd_link_info *info; |
6459 | struct ppc_link_hash_table *htab; | |
5bd4f169 | 6460 | asection *s; |
65f38f15 AM |
6461 | struct ppc_link_hash_entry *eh; |
6462 | struct ppc_dyn_relocs *p; | |
411e1bfb | 6463 | struct got_entry *gent; |
5bd4f169 | 6464 | |
e92d460e | 6465 | if (h->root.type == bfd_link_hash_indirect) |
b34976b6 | 6466 | return TRUE; |
5bd4f169 | 6467 | |
e92d460e AM |
6468 | if (h->root.type == bfd_link_hash_warning) |
6469 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6470 | ||
65f38f15 AM |
6471 | info = (struct bfd_link_info *) inf; |
6472 | htab = ppc_hash_table (info); | |
5bd4f169 | 6473 | |
65f38f15 | 6474 | if (htab->elf.dynamic_sections_created |
411e1bfb | 6475 | && h->dynindx != -1 |
9c7a29a3 | 6476 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
5bd4f169 | 6477 | { |
411e1bfb AM |
6478 | struct plt_entry *pent; |
6479 | bfd_boolean doneone = FALSE; | |
6480 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
6481 | if (pent->plt.refcount > 0) | |
6482 | { | |
411e1bfb AM |
6483 | /* If this is the first .plt entry, make room for the special |
6484 | first entry. */ | |
4ce794b7 | 6485 | s = htab->plt; |
eea6121a AM |
6486 | if (s->size == 0) |
6487 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
411e1bfb | 6488 | |
eea6121a | 6489 | pent->plt.offset = s->size; |
411e1bfb AM |
6490 | |
6491 | /* Make room for this entry. */ | |
eea6121a | 6492 | s->size += PLT_ENTRY_SIZE; |
411e1bfb AM |
6493 | |
6494 | /* Make room for the .glink code. */ | |
4ce794b7 | 6495 | s = htab->glink; |
eea6121a AM |
6496 | if (s->size == 0) |
6497 | s->size += GLINK_CALL_STUB_SIZE; | |
411e1bfb | 6498 | /* We need bigger stubs past index 32767. */ |
eea6121a AM |
6499 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
6500 | s->size += 4; | |
6501 | s->size += 2*4; | |
411e1bfb AM |
6502 | |
6503 | /* We also need to make an entry in the .rela.plt section. */ | |
4ce794b7 | 6504 | s = htab->relplt; |
eea6121a | 6505 | s->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
6506 | doneone = TRUE; |
6507 | } | |
6508 | else | |
6509 | pent->plt.offset = (bfd_vma) -1; | |
6510 | if (!doneone) | |
65f38f15 | 6511 | { |
411e1bfb | 6512 | h->plt.plist = NULL; |
65f38f15 AM |
6513 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
6514 | } | |
6515 | } | |
6516 | else | |
6517 | { | |
411e1bfb | 6518 | h->plt.plist = NULL; |
65f38f15 AM |
6519 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
6520 | } | |
6521 | ||
951fd09b AM |
6522 | eh = (struct ppc_link_hash_entry *) h; |
6523 | /* Run through the TLS GD got entries first if we're changing them | |
6524 | to TPREL. */ | |
e7b938ca | 6525 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
951fd09b AM |
6526 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
6527 | if (gent->got.refcount > 0 | |
6528 | && (gent->tls_type & TLS_GD) != 0) | |
6529 | { | |
6530 | /* This was a GD entry that has been converted to TPREL. If | |
6531 | there happens to be a TPREL entry we can use that one. */ | |
6532 | struct got_entry *ent; | |
6533 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
6534 | if (ent->got.refcount > 0 | |
6535 | && (ent->tls_type & TLS_TPREL) != 0 | |
e717da7e AM |
6536 | && ent->addend == gent->addend |
6537 | && ent->owner == gent->owner) | |
951fd09b AM |
6538 | { |
6539 | gent->got.refcount = 0; | |
6540 | break; | |
6541 | } | |
6542 | ||
6543 | /* If not, then we'll be using our own TPREL entry. */ | |
6544 | if (gent->got.refcount != 0) | |
6545 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
6546 | } | |
6547 | ||
411e1bfb AM |
6548 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
6549 | if (gent->got.refcount > 0) | |
6550 | { | |
951fd09b AM |
6551 | bfd_boolean dyn; |
6552 | ||
411e1bfb | 6553 | /* Make sure this symbol is output as a dynamic symbol. |
951fd09b AM |
6554 | Undefined weak syms won't yet be marked as dynamic, |
6555 | nor will all TLS symbols. */ | |
411e1bfb AM |
6556 | if (h->dynindx == -1 |
6557 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
6558 | { | |
c152c796 | 6559 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
411e1bfb AM |
6560 | return FALSE; |
6561 | } | |
65f38f15 | 6562 | |
d881513a AM |
6563 | if ((gent->tls_type & TLS_LD) != 0 |
6564 | && !(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC)) | |
411e1bfb | 6565 | { |
e717da7e | 6566 | gent->got.offset = ppc64_tlsld_got (gent->owner)->offset; |
951fd09b | 6567 | continue; |
411e1bfb | 6568 | } |
951fd09b | 6569 | |
e717da7e | 6570 | s = ppc64_elf_tdata (gent->owner)->got; |
eea6121a AM |
6571 | gent->got.offset = s->size; |
6572 | s->size | |
d881513a | 6573 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
951fd09b | 6574 | dyn = htab->elf.dynamic_sections_created; |
4e795f50 AM |
6575 | if ((info->shared |
6576 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
6577 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
6578 | || h->root.type != bfd_link_hash_undefweak)) | |
eea6121a | 6579 | ppc64_elf_tdata (gent->owner)->relgot->size |
e7b938ca | 6580 | += (gent->tls_type & eh->tls_mask & TLS_GD |
951fd09b AM |
6581 | ? 2 * sizeof (Elf64_External_Rela) |
6582 | : sizeof (Elf64_External_Rela)); | |
411e1bfb AM |
6583 | } |
6584 | else | |
6585 | gent->got.offset = (bfd_vma) -1; | |
65f38f15 | 6586 | |
65f38f15 | 6587 | if (eh->dyn_relocs == NULL) |
b34976b6 | 6588 | return TRUE; |
65f38f15 AM |
6589 | |
6590 | /* In the shared -Bsymbolic case, discard space allocated for | |
6591 | dynamic pc-relative relocs against symbols which turn out to be | |
6592 | defined in regular objects. For the normal shared case, discard | |
6593 | space for relocs that have become local due to symbol visibility | |
6594 | changes. */ | |
6595 | ||
6596 | if (info->shared) | |
6597 | { | |
9c7a29a3 AM |
6598 | /* Relocs that use pc_count are those that appear on a call insn, |
6599 | or certain REL relocs (see MUST_BE_DYN_RELOC) that can be | |
6600 | generated via assembly. We want calls to protected symbols to | |
6601 | resolve directly to the function rather than going via the plt. | |
6602 | If people want function pointer comparisons to work as expected | |
6603 | then they should avoid writing weird assembly. */ | |
09695f56 | 6604 | if (SYMBOL_CALLS_LOCAL (info, h)) |
65f38f15 AM |
6605 | { |
6606 | struct ppc_dyn_relocs **pp; | |
6607 | ||
6608 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
5bd4f169 | 6609 | { |
65f38f15 AM |
6610 | p->count -= p->pc_count; |
6611 | p->pc_count = 0; | |
6612 | if (p->count == 0) | |
6613 | *pp = p->next; | |
6614 | else | |
6615 | pp = &p->next; | |
5bd4f169 | 6616 | } |
65f38f15 | 6617 | } |
4e795f50 AM |
6618 | |
6619 | /* Also discard relocs on undefined weak syms with non-default | |
6620 | visibility. */ | |
6621 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
6622 | && h->root.type == bfd_link_hash_undefweak) | |
6623 | eh->dyn_relocs = NULL; | |
65f38f15 | 6624 | } |
f4656909 | 6625 | else if (ELIMINATE_COPY_RELOCS) |
65f38f15 AM |
6626 | { |
6627 | /* For the non-shared case, discard space for relocs against | |
6628 | symbols which turn out to need copy relocs or are not | |
6629 | dynamic. */ | |
6630 | ||
6631 | if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 | |
58ac9f71 AM |
6632 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
6633 | && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) | |
65f38f15 AM |
6634 | { |
6635 | /* Make sure this symbol is output as a dynamic symbol. | |
6636 | Undefined weak syms won't yet be marked as dynamic. */ | |
6637 | if (h->dynindx == -1 | |
6638 | && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) | |
6639 | { | |
c152c796 | 6640 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
b34976b6 | 6641 | return FALSE; |
65f38f15 AM |
6642 | } |
6643 | ||
6644 | /* If that succeeded, we know we'll be keeping all the | |
6645 | relocs. */ | |
6646 | if (h->dynindx != -1) | |
6647 | goto keep; | |
6648 | } | |
6649 | ||
6650 | eh->dyn_relocs = NULL; | |
6651 | ||
ec338859 | 6652 | keep: ; |
65f38f15 AM |
6653 | } |
6654 | ||
6655 | /* Finally, allocate space. */ | |
6656 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6657 | { | |
6658 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
eea6121a | 6659 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
65f38f15 AM |
6660 | } |
6661 | ||
b34976b6 | 6662 | return TRUE; |
65f38f15 AM |
6663 | } |
6664 | ||
6665 | /* Find any dynamic relocs that apply to read-only sections. */ | |
6666 | ||
b34976b6 | 6667 | static bfd_boolean |
4ce794b7 | 6668 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
65f38f15 AM |
6669 | { |
6670 | struct ppc_link_hash_entry *eh; | |
6671 | struct ppc_dyn_relocs *p; | |
6672 | ||
e92d460e AM |
6673 | if (h->root.type == bfd_link_hash_warning) |
6674 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6675 | ||
65f38f15 AM |
6676 | eh = (struct ppc_link_hash_entry *) h; |
6677 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
6678 | { | |
6679 | asection *s = p->sec->output_section; | |
6680 | ||
6681 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
6682 | { | |
4ce794b7 | 6683 | struct bfd_link_info *info = inf; |
65f38f15 AM |
6684 | |
6685 | info->flags |= DF_TEXTREL; | |
6686 | ||
6687 | /* Not an error, just cut short the traversal. */ | |
b34976b6 | 6688 | return FALSE; |
65f38f15 AM |
6689 | } |
6690 | } | |
b34976b6 | 6691 | return TRUE; |
65f38f15 AM |
6692 | } |
6693 | ||
6694 | /* Set the sizes of the dynamic sections. */ | |
6695 | ||
b34976b6 | 6696 | static bfd_boolean |
4ce794b7 AM |
6697 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
6698 | struct bfd_link_info *info) | |
65f38f15 AM |
6699 | { |
6700 | struct ppc_link_hash_table *htab; | |
6701 | bfd *dynobj; | |
6702 | asection *s; | |
b34976b6 | 6703 | bfd_boolean relocs; |
65f38f15 AM |
6704 | bfd *ibfd; |
6705 | ||
6706 | htab = ppc_hash_table (info); | |
6707 | dynobj = htab->elf.dynobj; | |
6708 | if (dynobj == NULL) | |
6709 | abort (); | |
6710 | ||
6711 | if (htab->elf.dynamic_sections_created) | |
6712 | { | |
6713 | /* Set the contents of the .interp section to the interpreter. */ | |
36af4a4e | 6714 | if (info->executable) |
65f38f15 AM |
6715 | { |
6716 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
6717 | if (s == NULL) | |
6718 | abort (); | |
eea6121a | 6719 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
65f38f15 AM |
6720 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
6721 | } | |
6722 | } | |
6723 | ||
6724 | /* Set up .got offsets for local syms, and space for local dynamic | |
6725 | relocs. */ | |
6726 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
6727 | { | |
411e1bfb AM |
6728 | struct got_entry **lgot_ents; |
6729 | struct got_entry **end_lgot_ents; | |
e7b938ca | 6730 | char *lgot_masks; |
65f38f15 AM |
6731 | bfd_size_type locsymcount; |
6732 | Elf_Internal_Shdr *symtab_hdr; | |
6733 | asection *srel; | |
6734 | ||
6735 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
6736 | continue; | |
6737 | ||
e717da7e AM |
6738 | if (ppc64_tlsld_got (ibfd)->refcount > 0) |
6739 | { | |
6740 | s = ppc64_elf_tdata (ibfd)->got; | |
eea6121a AM |
6741 | ppc64_tlsld_got (ibfd)->offset = s->size; |
6742 | s->size += 16; | |
e717da7e AM |
6743 | if (info->shared) |
6744 | { | |
6745 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
eea6121a | 6746 | srel->size += sizeof (Elf64_External_Rela); |
e717da7e AM |
6747 | } |
6748 | } | |
6749 | else | |
6750 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
6751 | ||
65f38f15 AM |
6752 | for (s = ibfd->sections; s != NULL; s = s->next) |
6753 | { | |
ec338859 | 6754 | struct ppc_dyn_relocs *p; |
65f38f15 | 6755 | |
ec338859 AM |
6756 | for (p = *((struct ppc_dyn_relocs **) |
6757 | &elf_section_data (s)->local_dynrel); | |
6758 | p != NULL; | |
6759 | p = p->next) | |
65f38f15 | 6760 | { |
ec338859 AM |
6761 | if (!bfd_is_abs_section (p->sec) |
6762 | && bfd_is_abs_section (p->sec->output_section)) | |
6763 | { | |
6764 | /* Input section has been discarded, either because | |
6765 | it is a copy of a linkonce section or due to | |
6766 | linker script /DISCARD/, so we'll be discarding | |
6767 | the relocs too. */ | |
6768 | } | |
248866a8 | 6769 | else if (p->count != 0) |
ec338859 AM |
6770 | { |
6771 | srel = elf_section_data (p->sec)->sreloc; | |
eea6121a | 6772 | srel->size += p->count * sizeof (Elf64_External_Rela); |
248866a8 AM |
6773 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
6774 | info->flags |= DF_TEXTREL; | |
ec338859 | 6775 | } |
65f38f15 AM |
6776 | } |
6777 | } | |
6778 | ||
411e1bfb AM |
6779 | lgot_ents = elf_local_got_ents (ibfd); |
6780 | if (!lgot_ents) | |
65f38f15 AM |
6781 | continue; |
6782 | ||
6783 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
6784 | locsymcount = symtab_hdr->sh_info; | |
411e1bfb | 6785 | end_lgot_ents = lgot_ents + locsymcount; |
e7b938ca | 6786 | lgot_masks = (char *) end_lgot_ents; |
e717da7e AM |
6787 | s = ppc64_elf_tdata (ibfd)->got; |
6788 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
e7b938ca | 6789 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
65f38f15 | 6790 | { |
411e1bfb AM |
6791 | struct got_entry *ent; |
6792 | ||
6793 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
6794 | if (ent->got.refcount > 0) | |
6795 | { | |
e7b938ca | 6796 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
411e1bfb | 6797 | { |
e717da7e | 6798 | if (ppc64_tlsld_got (ibfd)->offset == (bfd_vma) -1) |
411e1bfb | 6799 | { |
eea6121a AM |
6800 | ppc64_tlsld_got (ibfd)->offset = s->size; |
6801 | s->size += 16; | |
411e1bfb | 6802 | if (info->shared) |
eea6121a | 6803 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb | 6804 | } |
e717da7e | 6805 | ent->got.offset = ppc64_tlsld_got (ibfd)->offset; |
411e1bfb AM |
6806 | } |
6807 | else | |
6808 | { | |
eea6121a | 6809 | ent->got.offset = s->size; |
e7b938ca | 6810 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
411e1bfb | 6811 | { |
eea6121a | 6812 | s->size += 16; |
411e1bfb | 6813 | if (info->shared) |
eea6121a | 6814 | srel->size += 2 * sizeof (Elf64_External_Rela); |
411e1bfb AM |
6815 | } |
6816 | else | |
6817 | { | |
eea6121a | 6818 | s->size += 8; |
411e1bfb | 6819 | if (info->shared) |
eea6121a | 6820 | srel->size += sizeof (Elf64_External_Rela); |
411e1bfb AM |
6821 | } |
6822 | } | |
6823 | } | |
6824 | else | |
6825 | ent->got.offset = (bfd_vma) -1; | |
65f38f15 AM |
6826 | } |
6827 | } | |
6828 | ||
6829 | /* Allocate global sym .plt and .got entries, and space for global | |
6830 | sym dynamic relocs. */ | |
4ce794b7 | 6831 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
65f38f15 AM |
6832 | |
6833 | /* We now have determined the sizes of the various dynamic sections. | |
6834 | Allocate memory for them. */ | |
b34976b6 | 6835 | relocs = FALSE; |
65f38f15 AM |
6836 | for (s = dynobj->sections; s != NULL; s = s->next) |
6837 | { | |
6838 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
6839 | continue; | |
6840 | ||
4ce794b7 | 6841 | if (s == htab->brlt || s == htab->relbrlt) |
721956f4 AM |
6842 | /* These haven't been allocated yet; don't strip. */ |
6843 | continue; | |
e717da7e AM |
6844 | else if (s == htab->got |
6845 | || s == htab->plt | |
4ce794b7 | 6846 | || s == htab->glink) |
65f38f15 AM |
6847 | { |
6848 | /* Strip this section if we don't need it; see the | |
6849 | comment below. */ | |
5bd4f169 | 6850 | } |
65f38f15 | 6851 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
5bd4f169 | 6852 | { |
eea6121a | 6853 | if (s->size == 0) |
5bd4f169 AM |
6854 | { |
6855 | /* If we don't need this section, strip it from the | |
6856 | output file. This is mostly to handle .rela.bss and | |
6857 | .rela.plt. We must create both sections in | |
6858 | create_dynamic_sections, because they must be created | |
6859 | before the linker maps input sections to output | |
6860 | sections. The linker does that before | |
6861 | adjust_dynamic_symbol is called, and it is that | |
6862 | function which decides whether anything needs to go | |
6863 | into these sections. */ | |
5bd4f169 AM |
6864 | } |
6865 | else | |
6866 | { | |
4ce794b7 | 6867 | if (s != htab->relplt) |
b34976b6 | 6868 | relocs = TRUE; |
5bd4f169 AM |
6869 | |
6870 | /* We use the reloc_count field as a counter if we need | |
6871 | to copy relocs into the output file. */ | |
6872 | s->reloc_count = 0; | |
6873 | } | |
6874 | } | |
65f38f15 | 6875 | else |
5bd4f169 AM |
6876 | { |
6877 | /* It's not one of our sections, so don't allocate space. */ | |
6878 | continue; | |
6879 | } | |
6880 | ||
eea6121a | 6881 | if (s->size == 0) |
5bd4f169 AM |
6882 | { |
6883 | _bfd_strip_section_from_output (info, s); | |
6884 | continue; | |
6885 | } | |
6886 | ||
5f333394 | 6887 | /* .plt is in the bss section. We don't initialise it. */ |
680a3378 | 6888 | if (s == htab->plt) |
5f333394 AM |
6889 | continue; |
6890 | ||
65f38f15 AM |
6891 | /* Allocate memory for the section contents. We use bfd_zalloc |
6892 | here in case unused entries are not reclaimed before the | |
6893 | section's contents are written out. This should not happen, | |
411e1bfb AM |
6894 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
6895 | sections instead of garbage. | |
6896 | We also rely on the section contents being zero when writing | |
6897 | the GOT. */ | |
eea6121a | 6898 | s->contents = bfd_zalloc (dynobj, s->size); |
65f38f15 | 6899 | if (s->contents == NULL) |
b34976b6 | 6900 | return FALSE; |
5bd4f169 AM |
6901 | } |
6902 | ||
e717da7e AM |
6903 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
6904 | { | |
6905 | s = ppc64_elf_tdata (ibfd)->got; | |
6906 | if (s != NULL && s != htab->got) | |
6907 | { | |
eea6121a | 6908 | if (s->size == 0) |
e717da7e AM |
6909 | _bfd_strip_section_from_output (info, s); |
6910 | else | |
6911 | { | |
eea6121a | 6912 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
6913 | if (s->contents == NULL) |
6914 | return FALSE; | |
6915 | } | |
6916 | } | |
6917 | s = ppc64_elf_tdata (ibfd)->relgot; | |
6918 | if (s != NULL) | |
6919 | { | |
eea6121a | 6920 | if (s->size == 0) |
e717da7e AM |
6921 | _bfd_strip_section_from_output (info, s); |
6922 | else | |
6923 | { | |
eea6121a | 6924 | s->contents = bfd_zalloc (ibfd, s->size); |
e717da7e AM |
6925 | if (s->contents == NULL) |
6926 | return FALSE; | |
6927 | relocs = TRUE; | |
6928 | s->reloc_count = 0; | |
6929 | } | |
6930 | } | |
6931 | } | |
6932 | ||
e86ce104 | 6933 | if (htab->elf.dynamic_sections_created) |
5bd4f169 AM |
6934 | { |
6935 | /* Add some entries to the .dynamic section. We fill in the | |
6936 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
6937 | must add the entries now so that we get the correct size for | |
6938 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
6939 | dynamic linker and used by the debugger. */ | |
dc810e39 | 6940 | #define add_dynamic_entry(TAG, VAL) \ |
5a580b3a | 6941 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
dc810e39 | 6942 | |
36af4a4e | 6943 | if (info->executable) |
5bd4f169 | 6944 | { |
dc810e39 | 6945 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
b34976b6 | 6946 | return FALSE; |
5bd4f169 AM |
6947 | } |
6948 | ||
eea6121a | 6949 | if (htab->plt != NULL && htab->plt->size != 0) |
5bd4f169 | 6950 | { |
dc810e39 AM |
6951 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
6952 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
6953 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
5d1634d7 AM |
6954 | || !add_dynamic_entry (DT_JMPREL, 0) |
6955 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
b34976b6 | 6956 | return FALSE; |
5bd4f169 AM |
6957 | } |
6958 | ||
19397422 AM |
6959 | if (NO_OPD_RELOCS) |
6960 | { | |
6961 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
6962 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
b34976b6 | 6963 | return FALSE; |
19397422 AM |
6964 | } |
6965 | ||
5bd4f169 AM |
6966 | if (relocs) |
6967 | { | |
dc810e39 AM |
6968 | if (!add_dynamic_entry (DT_RELA, 0) |
6969 | || !add_dynamic_entry (DT_RELASZ, 0) | |
6970 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
b34976b6 | 6971 | return FALSE; |
5bd4f169 | 6972 | |
65f38f15 AM |
6973 | /* If any dynamic relocs apply to a read-only section, |
6974 | then we need a DT_TEXTREL entry. */ | |
248866a8 | 6975 | if ((info->flags & DF_TEXTREL) == 0) |
4ce794b7 | 6976 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
5bd4f169 | 6977 | |
65f38f15 | 6978 | if ((info->flags & DF_TEXTREL) != 0) |
5bd4f169 | 6979 | { |
65f38f15 | 6980 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
b34976b6 | 6981 | return FALSE; |
5bd4f169 | 6982 | } |
5bd4f169 | 6983 | } |
5bd4f169 | 6984 | } |
65f38f15 | 6985 | #undef add_dynamic_entry |
5bd4f169 | 6986 | |
b34976b6 | 6987 | return TRUE; |
5bd4f169 AM |
6988 | } |
6989 | ||
721956f4 | 6990 | /* Determine the type of stub needed, if any, for a call. */ |
5bd4f169 | 6991 | |
4ce794b7 AM |
6992 | static inline enum ppc_stub_type |
6993 | ppc_type_of_stub (asection *input_sec, | |
6994 | const Elf_Internal_Rela *rel, | |
6995 | struct ppc_link_hash_entry **hash, | |
6996 | bfd_vma destination) | |
5bd4f169 | 6997 | { |
721956f4 AM |
6998 | struct ppc_link_hash_entry *h = *hash; |
6999 | bfd_vma location; | |
7000 | bfd_vma branch_offset; | |
7001 | bfd_vma max_branch_offset; | |
4ce794b7 | 7002 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 | 7003 | |
721956f4 AM |
7004 | if (h != NULL) |
7005 | { | |
7006 | if (h->oh != NULL | |
8387904d AM |
7007 | && h->oh->is_func_descriptor) |
7008 | h = h->oh; | |
7009 | ||
7010 | if (h->elf.dynindx != -1) | |
5bd4f169 | 7011 | { |
411e1bfb | 7012 | struct plt_entry *ent; |
8387904d AM |
7013 | |
7014 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) | |
411e1bfb AM |
7015 | if (ent->addend == rel->r_addend |
7016 | && ent->plt.offset != (bfd_vma) -1) | |
7017 | { | |
8387904d | 7018 | *hash = h; |
411e1bfb AM |
7019 | return ppc_stub_plt_call; |
7020 | } | |
5bd4f169 AM |
7021 | } |
7022 | ||
ee7de3e6 AM |
7023 | if (!(h->elf.root.type == bfd_link_hash_defined |
7024 | || h->elf.root.type == bfd_link_hash_defweak) | |
7025 | || h->elf.root.u.def.section->output_section == NULL) | |
721956f4 | 7026 | return ppc_stub_none; |
5d1634d7 | 7027 | } |
5d1634d7 | 7028 | |
721956f4 AM |
7029 | /* Determine where the call point is. */ |
7030 | location = (input_sec->output_offset | |
7031 | + input_sec->output_section->vma | |
7032 | + rel->r_offset); | |
5d1634d7 | 7033 | |
721956f4 AM |
7034 | branch_offset = destination - location; |
7035 | r_type = ELF64_R_TYPE (rel->r_info); | |
5d1634d7 | 7036 | |
721956f4 AM |
7037 | /* Determine if a long branch stub is needed. */ |
7038 | max_branch_offset = 1 << 25; | |
4ce794b7 | 7039 | if (r_type != R_PPC64_REL24) |
721956f4 | 7040 | max_branch_offset = 1 << 15; |
5d1634d7 | 7041 | |
721956f4 AM |
7042 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
7043 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
7044 | is needed later. */ | |
7045 | return ppc_stub_long_branch; | |
5d1634d7 | 7046 | |
721956f4 | 7047 | return ppc_stub_none; |
5d1634d7 AM |
7048 | } |
7049 | ||
7050 | /* Build a .plt call stub. */ | |
7051 | ||
4ce794b7 AM |
7052 | static inline bfd_byte * |
7053 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset) | |
5d1634d7 AM |
7054 | { |
7055 | #define PPC_LO(v) ((v) & 0xffff) | |
7056 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
7057 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
7058 | ||
5d1634d7 | 7059 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
ad8e1ba5 | 7060 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
5d1634d7 AM |
7061 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; |
7062 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7063 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7064 | offset += 8; |
7065 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4; | |
7066 | if (PPC_HA (offset + 8) != PPC_HA (offset)) | |
ad8e1ba5 | 7067 | bfd_put_32 (obfd, ADDIS_R12_R12 | 1, p), p += 4; |
5d1634d7 AM |
7068 | offset += 8; |
7069 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
7070 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
7071 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
7072 | return p; | |
7073 | } | |
7074 | ||
b34976b6 | 7075 | static bfd_boolean |
4ce794b7 | 7076 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
5d1634d7 | 7077 | { |
721956f4 AM |
7078 | struct ppc_stub_hash_entry *stub_entry; |
7079 | struct ppc_branch_hash_entry *br_entry; | |
5d1634d7 AM |
7080 | struct bfd_link_info *info; |
7081 | struct ppc_link_hash_table *htab; | |
721956f4 AM |
7082 | bfd_byte *loc; |
7083 | bfd_byte *p; | |
7084 | unsigned int indx; | |
411e1bfb | 7085 | struct plt_entry *ent; |
721956f4 AM |
7086 | bfd_vma off; |
7087 | int size; | |
5d1634d7 | 7088 | |
721956f4 AM |
7089 | /* Massage our args to the form they really have. */ |
7090 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
4ce794b7 | 7091 | info = in_arg; |
5d1634d7 | 7092 | |
5d1634d7 AM |
7093 | htab = ppc_hash_table (info); |
7094 | ||
721956f4 | 7095 | /* Make a note of the offset within the stubs for this entry. */ |
eea6121a | 7096 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
97b639ba | 7097 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
721956f4 | 7098 | |
4ce794b7 | 7099 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
721956f4 | 7100 | switch (stub_entry->stub_type) |
5d1634d7 | 7101 | { |
721956f4 | 7102 | case ppc_stub_long_branch: |
ad8e1ba5 | 7103 | case ppc_stub_long_branch_r2off: |
721956f4 AM |
7104 | /* Branches are relative. This is where we are going to. */ |
7105 | off = (stub_entry->target_value | |
7106 | + stub_entry->target_section->output_offset | |
7107 | + stub_entry->target_section->output_section->vma); | |
5d1634d7 | 7108 | |
721956f4 AM |
7109 | /* And this is where we are coming from. */ |
7110 | off -= (stub_entry->stub_offset | |
97b639ba AM |
7111 | + stub_entry->stub_sec->output_offset |
7112 | + stub_entry->stub_sec->output_section->vma); | |
e86ce104 | 7113 | |
ad8e1ba5 AM |
7114 | if (stub_entry->stub_type != ppc_stub_long_branch_r2off) |
7115 | size = 4; | |
7116 | else | |
7117 | { | |
7118 | bfd_vma r2off; | |
7119 | ||
7120 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
7121 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 7122 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 7123 | loc += 4; |
97b639ba | 7124 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 7125 | loc += 4; |
97b639ba | 7126 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
7127 | loc += 4; |
7128 | off -= 12; | |
7129 | size = 16; | |
7130 | } | |
97b639ba | 7131 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
ad8e1ba5 AM |
7132 | |
7133 | BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26)); | |
721956f4 | 7134 | break; |
e86ce104 | 7135 | |
721956f4 | 7136 | case ppc_stub_plt_branch: |
ad8e1ba5 | 7137 | case ppc_stub_plt_branch_r2off: |
721956f4 AM |
7138 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
7139 | stub_entry->root.string + 9, | |
b34976b6 | 7140 | FALSE, FALSE); |
721956f4 AM |
7141 | if (br_entry == NULL) |
7142 | { | |
7143 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
7144 | stub_entry->root.string + 9); | |
b34976b6 AM |
7145 | htab->stub_error = TRUE; |
7146 | return FALSE; | |
721956f4 AM |
7147 | } |
7148 | ||
7149 | off = (stub_entry->target_value | |
7150 | + stub_entry->target_section->output_offset | |
7151 | + stub_entry->target_section->output_section->vma); | |
7152 | ||
4ce794b7 AM |
7153 | bfd_put_64 (htab->brlt->owner, off, |
7154 | htab->brlt->contents + br_entry->offset); | |
721956f4 AM |
7155 | |
7156 | if (info->shared) | |
7157 | { | |
7158 | /* Create a reloc for the branch lookup table entry. */ | |
7159 | Elf_Internal_Rela rela; | |
ad8e1ba5 | 7160 | bfd_byte *rl; |
5d1634d7 | 7161 | |
721956f4 | 7162 | rela.r_offset = (br_entry->offset |
4ce794b7 AM |
7163 | + htab->brlt->output_offset |
7164 | + htab->brlt->output_section->vma); | |
721956f4 AM |
7165 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
7166 | rela.r_addend = off; | |
7167 | ||
4ce794b7 AM |
7168 | rl = htab->relbrlt->contents; |
7169 | rl += htab->relbrlt->reloc_count++ * sizeof (Elf64_External_Rela); | |
7170 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
721956f4 AM |
7171 | } |
7172 | ||
7173 | off = (br_entry->offset | |
4ce794b7 AM |
7174 | + htab->brlt->output_offset |
7175 | + htab->brlt->output_section->vma | |
7176 | - elf_gp (htab->brlt->output_section->owner) | |
ad8e1ba5 | 7177 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 7178 | |
ad8e1ba5 | 7179 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
5d1634d7 AM |
7180 | { |
7181 | (*_bfd_error_handler) | |
e86ce104 | 7182 | (_("linkage table error against `%s'"), |
721956f4 | 7183 | stub_entry->root.string); |
5d1634d7 | 7184 | bfd_set_error (bfd_error_bad_value); |
b34976b6 AM |
7185 | htab->stub_error = TRUE; |
7186 | return FALSE; | |
5d1634d7 | 7187 | } |
41bd81ab | 7188 | |
721956f4 | 7189 | indx = off; |
ad8e1ba5 AM |
7190 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
7191 | { | |
97b639ba | 7192 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 7193 | loc += 4; |
97b639ba | 7194 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 AM |
7195 | size = 16; |
7196 | } | |
7197 | else | |
7198 | { | |
7199 | bfd_vma r2off; | |
7200 | ||
7201 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
7202 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
97b639ba | 7203 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
ad8e1ba5 | 7204 | loc += 4; |
97b639ba | 7205 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (indx), loc); |
ad8e1ba5 | 7206 | loc += 4; |
97b639ba | 7207 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (indx), loc); |
ad8e1ba5 | 7208 | loc += 4; |
97b639ba | 7209 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); |
ad8e1ba5 | 7210 | loc += 4; |
97b639ba | 7211 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
ad8e1ba5 AM |
7212 | size = 28; |
7213 | } | |
7214 | loc += 4; | |
97b639ba | 7215 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
ad8e1ba5 | 7216 | loc += 4; |
97b639ba | 7217 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
721956f4 | 7218 | break; |
5d1634d7 | 7219 | |
721956f4 | 7220 | case ppc_stub_plt_call: |
c862ae31 AM |
7221 | /* Do the best we can for shared libraries built without |
7222 | exporting ".foo" for each "foo". This can happen when symbol | |
7223 | versioning scripts strip all bar a subset of symbols. */ | |
8387904d AM |
7224 | if (stub_entry->h->oh != NULL |
7225 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
34814b9f | 7226 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
c862ae31 AM |
7227 | { |
7228 | /* Point the symbol at the stub. There may be multiple stubs, | |
7229 | we don't really care; The main thing is to make this sym | |
8f3bab57 AM |
7230 | defined somewhere. Maybe defining the symbol in the stub |
7231 | section is a silly idea. If we didn't do this, htab->top_id | |
7232 | could disappear. */ | |
34814b9f AM |
7233 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
7234 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
7235 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
c862ae31 AM |
7236 | } |
7237 | ||
721956f4 | 7238 | /* Now build the stub. */ |
411e1bfb AM |
7239 | off = (bfd_vma) -1; |
7240 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) | |
7241 | if (ent->addend == stub_entry->addend) | |
7242 | { | |
7243 | off = ent->plt.offset; | |
7244 | break; | |
7245 | } | |
721956f4 AM |
7246 | if (off >= (bfd_vma) -2) |
7247 | abort (); | |
7248 | ||
7249 | off &= ~ (bfd_vma) 1; | |
4ce794b7 AM |
7250 | off += (htab->plt->output_offset |
7251 | + htab->plt->output_section->vma | |
7252 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 7253 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 7254 | |
ad8e1ba5 | 7255 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
721956f4 AM |
7256 | { |
7257 | (*_bfd_error_handler) | |
7258 | (_("linkage table error against `%s'"), | |
7259 | stub_entry->h->elf.root.root.string); | |
7260 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 AM |
7261 | htab->stub_error = TRUE; |
7262 | return FALSE; | |
721956f4 AM |
7263 | } |
7264 | ||
97b639ba | 7265 | p = build_plt_stub (htab->stub_bfd, loc, off); |
721956f4 AM |
7266 | size = p - loc; |
7267 | break; | |
7268 | ||
7269 | default: | |
7270 | BFD_FAIL (); | |
b34976b6 | 7271 | return FALSE; |
721956f4 AM |
7272 | } |
7273 | ||
eea6121a | 7274 | stub_entry->stub_sec->size += size; |
97b639ba AM |
7275 | |
7276 | if (htab->emit_stub_syms | |
7277 | && !(stub_entry->stub_type == ppc_stub_plt_call | |
8387904d | 7278 | && stub_entry->h->oh != NULL |
34814b9f AM |
7279 | && stub_entry->h->oh->elf.root.type == bfd_link_hash_defined |
7280 | && stub_entry->h->oh->elf.root.u.def.section == stub_entry->stub_sec | |
7281 | && stub_entry->h->oh->elf.root.u.def.value == stub_entry->stub_offset)) | |
97b639ba AM |
7282 | { |
7283 | struct elf_link_hash_entry *h; | |
7284 | h = elf_link_hash_lookup (&htab->elf, stub_entry->root.string, | |
7285 | TRUE, FALSE, FALSE); | |
7286 | if (h == NULL) | |
7287 | return FALSE; | |
7288 | if (h->root.type == bfd_link_hash_new) | |
7289 | { | |
7290 | h->root.type = bfd_link_hash_defined; | |
7291 | h->root.u.def.section = stub_entry->stub_sec; | |
7292 | h->root.u.def.value = stub_entry->stub_offset; | |
7293 | h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR | |
7294 | | ELF_LINK_HASH_DEF_REGULAR | |
7295 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
7296 | | ELF_LINK_FORCED_LOCAL); | |
7297 | } | |
7298 | } | |
7299 | ||
b34976b6 | 7300 | return TRUE; |
721956f4 AM |
7301 | } |
7302 | ||
7303 | /* As above, but don't actually build the stub. Just bump offset so | |
7304 | we know stub section sizes, and select plt_branch stubs where | |
7305 | long_branch stubs won't do. */ | |
7306 | ||
b34976b6 | 7307 | static bfd_boolean |
4ce794b7 | 7308 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
721956f4 AM |
7309 | { |
7310 | struct ppc_stub_hash_entry *stub_entry; | |
63bc6f6c | 7311 | struct bfd_link_info *info; |
721956f4 AM |
7312 | struct ppc_link_hash_table *htab; |
7313 | bfd_vma off; | |
7314 | int size; | |
7315 | ||
7316 | /* Massage our args to the form they really have. */ | |
7317 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
63bc6f6c AM |
7318 | info = in_arg; |
7319 | ||
7320 | htab = ppc_hash_table (info); | |
721956f4 AM |
7321 | |
7322 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
7323 | { | |
411e1bfb | 7324 | struct plt_entry *ent; |
58ac9f71 | 7325 | off = (bfd_vma) -1; |
411e1bfb AM |
7326 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
7327 | if (ent->addend == stub_entry->addend) | |
7328 | { | |
7329 | off = ent->plt.offset & ~(bfd_vma) 1; | |
7330 | break; | |
7331 | } | |
58ac9f71 | 7332 | if (off >= (bfd_vma) -2) |
411e1bfb | 7333 | abort (); |
4ce794b7 AM |
7334 | off += (htab->plt->output_offset |
7335 | + htab->plt->output_section->vma | |
7336 | - elf_gp (htab->plt->output_section->owner) | |
ad8e1ba5 | 7337 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
721956f4 | 7338 | |
ad8e1ba5 | 7339 | size = PLT_CALL_STUB_SIZE; |
4ce794b7 | 7340 | if (PPC_HA (off + 16) != PPC_HA (off)) |
721956f4 AM |
7341 | size += 4; |
7342 | } | |
7343 | else | |
7344 | { | |
ad8e1ba5 AM |
7345 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
7346 | variants. */ | |
721956f4 AM |
7347 | off = (stub_entry->target_value |
7348 | + stub_entry->target_section->output_offset | |
7349 | + stub_entry->target_section->output_section->vma); | |
eea6121a | 7350 | off -= (stub_entry->stub_sec->size |
721956f4 AM |
7351 | + stub_entry->stub_sec->output_offset |
7352 | + stub_entry->stub_sec->output_section->vma); | |
7353 | ||
ad8e1ba5 AM |
7354 | /* Reset the stub type from the plt variant in case we now |
7355 | can reach with a shorter stub. */ | |
7356 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
7357 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
7358 | ||
7359 | size = 4; | |
7360 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
7361 | { | |
7362 | off -= 12; | |
7363 | size = 16; | |
7364 | } | |
7365 | ||
7366 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
721956f4 AM |
7367 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
7368 | { | |
7369 | struct ppc_branch_hash_entry *br_entry; | |
7370 | ||
7371 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
7372 | stub_entry->root.string + 9, | |
b34976b6 | 7373 | TRUE, FALSE); |
721956f4 AM |
7374 | if (br_entry == NULL) |
7375 | { | |
7376 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
7377 | stub_entry->root.string + 9); | |
b34976b6 AM |
7378 | htab->stub_error = TRUE; |
7379 | return FALSE; | |
721956f4 AM |
7380 | } |
7381 | ||
7382 | if (br_entry->iter != htab->stub_iteration) | |
7383 | { | |
7384 | br_entry->iter = htab->stub_iteration; | |
eea6121a AM |
7385 | br_entry->offset = htab->brlt->size; |
7386 | htab->brlt->size += 8; | |
63bc6f6c AM |
7387 | |
7388 | if (info->shared) | |
eea6121a | 7389 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
721956f4 | 7390 | } |
ad8e1ba5 AM |
7391 | |
7392 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
721956f4 | 7393 | size = 16; |
ad8e1ba5 AM |
7394 | if (stub_entry->stub_type != ppc_stub_plt_branch) |
7395 | size = 28; | |
721956f4 AM |
7396 | } |
7397 | } | |
7398 | ||
eea6121a | 7399 | stub_entry->stub_sec->size += size; |
b34976b6 | 7400 | return TRUE; |
721956f4 AM |
7401 | } |
7402 | ||
7403 | /* Set up various things so that we can make a list of input sections | |
7404 | for each output section included in the link. Returns -1 on error, | |
cedb70c5 | 7405 | 0 when no stubs will be needed, and 1 on success. */ |
721956f4 AM |
7406 | |
7407 | int | |
4ce794b7 | 7408 | ppc64_elf_setup_section_lists (bfd *output_bfd, struct bfd_link_info *info) |
721956f4 AM |
7409 | { |
7410 | bfd *input_bfd; | |
734b6cf9 | 7411 | int top_id, top_index, id; |
721956f4 | 7412 | asection *section; |
734b6cf9 | 7413 | asection **input_list; |
721956f4 AM |
7414 | bfd_size_type amt; |
7415 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
7416 | ||
4ce794b7 | 7417 | if (htab->brlt == NULL) |
721956f4 AM |
7418 | return 0; |
7419 | ||
1e2f5b6e | 7420 | /* Find the top input section id. */ |
3d6f9012 | 7421 | for (input_bfd = info->input_bfds, top_id = 3; |
721956f4 AM |
7422 | input_bfd != NULL; |
7423 | input_bfd = input_bfd->link_next) | |
7424 | { | |
721956f4 AM |
7425 | for (section = input_bfd->sections; |
7426 | section != NULL; | |
7427 | section = section->next) | |
7428 | { | |
7429 | if (top_id < section->id) | |
7430 | top_id = section->id; | |
7431 | } | |
7432 | } | |
721956f4 | 7433 | |
8f3bab57 | 7434 | htab->top_id = top_id; |
721956f4 | 7435 | amt = sizeof (struct map_stub) * (top_id + 1); |
4ce794b7 | 7436 | htab->stub_group = bfd_zmalloc (amt); |
721956f4 AM |
7437 | if (htab->stub_group == NULL) |
7438 | return -1; | |
7439 | ||
3d6f9012 AM |
7440 | /* Set toc_off for com, und, abs and ind sections. */ |
7441 | for (id = 0; id < 3; id++) | |
7442 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
721956f4 | 7443 | |
3d6f9012 | 7444 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
734b6cf9 AM |
7445 | |
7446 | /* We can't use output_bfd->section_count here to find the top output | |
7447 | section index as some sections may have been removed, and | |
7448 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
7449 | for (section = output_bfd->sections, top_index = 0; | |
7450 | section != NULL; | |
7451 | section = section->next) | |
7452 | { | |
7453 | if (top_index < section->index) | |
7454 | top_index = section->index; | |
7455 | } | |
7456 | ||
7457 | htab->top_index = top_index; | |
7458 | amt = sizeof (asection *) * (top_index + 1); | |
4ce794b7 | 7459 | input_list = bfd_zmalloc (amt); |
734b6cf9 AM |
7460 | htab->input_list = input_list; |
7461 | if (input_list == NULL) | |
7462 | return -1; | |
7463 | ||
721956f4 AM |
7464 | return 1; |
7465 | } | |
7466 | ||
e717da7e AM |
7467 | /* The linker repeatedly calls this function for each TOC input section |
7468 | and linker generated GOT section. Group input bfds such that the toc | |
7469 | within a group is less than 64k in size. Will break with cute linker | |
7470 | scripts that play games with dot in the output toc section. */ | |
ad8e1ba5 AM |
7471 | |
7472 | void | |
4ce794b7 | 7473 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
ad8e1ba5 AM |
7474 | { |
7475 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
99877b66 AM |
7476 | bfd_vma addr = isec->output_offset + isec->output_section->vma; |
7477 | bfd_vma off = addr - htab->toc_curr; | |
ad8e1ba5 | 7478 | |
99877b66 AM |
7479 | if (off + isec->size > 0x10000) |
7480 | htab->toc_curr = addr; | |
7481 | ||
7482 | elf_gp (isec->owner) = (htab->toc_curr | |
7483 | - elf_gp (isec->output_section->owner) | |
7484 | + TOC_BASE_OFF); | |
ad8e1ba5 AM |
7485 | } |
7486 | ||
7487 | /* Called after the last call to the above function. */ | |
7488 | ||
7489 | void | |
4ce794b7 AM |
7490 | ppc64_elf_reinit_toc (bfd *output_bfd ATTRIBUTE_UNUSED, |
7491 | struct bfd_link_info *info) | |
ad8e1ba5 AM |
7492 | { |
7493 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
ad8e1ba5 AM |
7494 | |
7495 | /* toc_curr tracks the TOC offset used for code sections below in | |
7496 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
3d6f9012 | 7497 | htab->toc_curr = TOC_BASE_OFF; |
ad8e1ba5 AM |
7498 | } |
7499 | ||
9b5ecbd0 AM |
7500 | /* No toc references were found in ISEC. If the code in ISEC makes no |
7501 | calls, then there's no need to use toc adjusting stubs when branching | |
7502 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
7503 | load r2. */ | |
7504 | ||
7505 | static int | |
4ce794b7 | 7506 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
9b5ecbd0 AM |
7507 | { |
7508 | bfd_byte *contents; | |
7509 | bfd_size_type i; | |
7510 | int ret; | |
7511 | int branch_ok; | |
7512 | ||
772119ce AM |
7513 | /* We know none of our code bearing sections will need toc stubs. */ |
7514 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
7515 | return 0; | |
7516 | ||
eea6121a | 7517 | if (isec->size == 0) |
082c50f8 AM |
7518 | return 0; |
7519 | ||
9b5ecbd0 AM |
7520 | /* Hack for linux kernel. .fixup contains branches, but only back to |
7521 | the function that hit an exception. */ | |
7522 | branch_ok = strcmp (isec->name, ".fixup") == 0; | |
7523 | ||
7524 | contents = elf_section_data (isec)->this_hdr.contents; | |
7525 | if (contents == NULL) | |
7526 | { | |
eea6121a | 7527 | if (!bfd_malloc_and_get_section (isec->owner, isec, &contents)) |
9b5ecbd0 | 7528 | { |
eea6121a AM |
7529 | if (contents != NULL) |
7530 | free (contents); | |
9b5ecbd0 AM |
7531 | return -1; |
7532 | } | |
7533 | if (info->keep_memory) | |
7534 | elf_section_data (isec)->this_hdr.contents = contents; | |
7535 | } | |
7536 | ||
7537 | /* Code scan, because we don't necessarily have relocs on calls to | |
7538 | static functions. */ | |
7539 | ret = 0; | |
eea6121a | 7540 | for (i = 0; i < isec->size; i += 4) |
9b5ecbd0 AM |
7541 | { |
7542 | unsigned long insn = bfd_get_32 (isec->owner, contents + i); | |
7543 | /* Is this a branch? */ | |
772119ce | 7544 | if ((insn & (0x3f << 26)) == (18 << 26) |
9b5ecbd0 AM |
7545 | /* If branch and link, it's a function call. */ |
7546 | && ((insn & 1) != 0 | |
7547 | /* Sibling calls use a plain branch. I don't know a way | |
7548 | of deciding whether a branch is really a sibling call. */ | |
7549 | || !branch_ok)) | |
7550 | { | |
7551 | ret = 1; | |
7552 | break; | |
7553 | } | |
7554 | } | |
7555 | ||
7556 | if (elf_section_data (isec)->this_hdr.contents != contents) | |
7557 | free (contents); | |
7558 | return ret; | |
7559 | } | |
7560 | ||
721956f4 AM |
7561 | /* The linker repeatedly calls this function for each input section, |
7562 | in the order that input sections are linked into output sections. | |
7563 | Build lists of input sections to determine groupings between which | |
7564 | we may insert linker stubs. */ | |
7565 | ||
9b5ecbd0 | 7566 | bfd_boolean |
4ce794b7 | 7567 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
721956f4 AM |
7568 | { |
7569 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
9b5ecbd0 | 7570 | int ret; |
721956f4 | 7571 | |
734b6cf9 AM |
7572 | if ((isec->output_section->flags & SEC_CODE) != 0 |
7573 | && isec->output_section->index <= htab->top_index) | |
721956f4 | 7574 | { |
734b6cf9 | 7575 | asection **list = htab->input_list + isec->output_section->index; |
3d6f9012 | 7576 | /* Steal the link_sec pointer for our list. */ |
721956f4 | 7577 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
3d6f9012 AM |
7578 | /* This happens to make the list in reverse order, |
7579 | which is what we want. */ | |
734b6cf9 AM |
7580 | PREV_SEC (isec) = *list; |
7581 | *list = isec; | |
721956f4 | 7582 | } |
ad8e1ba5 AM |
7583 | |
7584 | /* If a code section has a function that uses the TOC then we need | |
7585 | to use the right TOC (obviously). Also, make sure that .opd gets | |
ee87f2da AM |
7586 | the correct TOC value for R_PPC64_TOC relocs that don't have or |
7587 | can't find their function symbol (shouldn't ever happen now). */ | |
ad8e1ba5 | 7588 | if (isec->has_gp_reloc || (isec->flags & SEC_CODE) == 0) |
9b5ecbd0 AM |
7589 | { |
7590 | if (elf_gp (isec->owner) != 0) | |
7591 | htab->toc_curr = elf_gp (isec->owner); | |
7592 | } | |
7593 | else if ((ret = toc_adjusting_stub_needed (info, isec)) < 0) | |
7594 | return FALSE; | |
7595 | else | |
7596 | isec->has_gp_reloc = ret; | |
ad8e1ba5 AM |
7597 | |
7598 | /* Functions that don't use the TOC can belong in any TOC group. | |
7599 | Use the last TOC base. This happens to make _init and _fini | |
7600 | pasting work. */ | |
7601 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
9b5ecbd0 | 7602 | return TRUE; |
721956f4 AM |
7603 | } |
7604 | ||
7605 | /* See whether we can group stub sections together. Grouping stub | |
7606 | sections may result in fewer stubs. More importantly, we need to | |
7607 | put all .init* and .fini* stubs at the beginning of the .init or | |
7608 | .fini output sections respectively, because glibc splits the | |
7609 | _init and _fini functions into multiple parts. Putting a stub in | |
7610 | the middle of a function is not a good idea. */ | |
7611 | ||
7612 | static void | |
4ce794b7 AM |
7613 | group_sections (struct ppc_link_hash_table *htab, |
7614 | bfd_size_type stub_group_size, | |
7615 | bfd_boolean stubs_always_before_branch) | |
721956f4 | 7616 | { |
734b6cf9 AM |
7617 | asection **list = htab->input_list + htab->top_index; |
7618 | do | |
721956f4 | 7619 | { |
734b6cf9 AM |
7620 | asection *tail = *list; |
7621 | while (tail != NULL) | |
721956f4 | 7622 | { |
734b6cf9 AM |
7623 | asection *curr; |
7624 | asection *prev; | |
7625 | bfd_size_type total; | |
7626 | bfd_boolean big_sec; | |
7627 | bfd_vma curr_toc; | |
7628 | ||
7629 | curr = tail; | |
eea6121a | 7630 | total = tail->size; |
734b6cf9 AM |
7631 | big_sec = total >= stub_group_size; |
7632 | curr_toc = htab->stub_group[tail->id].toc_off; | |
7633 | ||
7634 | while ((prev = PREV_SEC (curr)) != NULL | |
7635 | && ((total += curr->output_offset - prev->output_offset) | |
ad8e1ba5 AM |
7636 | < stub_group_size) |
7637 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
734b6cf9 AM |
7638 | curr = prev; |
7639 | ||
7640 | /* OK, the size from the start of CURR to the end is less | |
7641 | than stub_group_size and thus can be handled by one stub | |
7642 | section. (or the tail section is itself larger than | |
7643 | stub_group_size, in which case we may be toast.) We | |
7644 | should really be keeping track of the total size of stubs | |
7645 | added here, as stubs contribute to the final output | |
7646 | section size. That's a little tricky, and this way will | |
7647 | only break if stubs added make the total size more than | |
7648 | 2^25, ie. for the default stub_group_size, if stubs total | |
7649 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
7650 | do | |
721956f4 AM |
7651 | { |
7652 | prev = PREV_SEC (tail); | |
734b6cf9 | 7653 | /* Set up this stub group. */ |
721956f4 AM |
7654 | htab->stub_group[tail->id].link_sec = curr; |
7655 | } | |
734b6cf9 AM |
7656 | while (tail != curr && (tail = prev) != NULL); |
7657 | ||
7658 | /* But wait, there's more! Input sections up to stub_group_size | |
7659 | bytes before the stub section can be handled by it too. | |
7660 | Don't do this if we have a really large section after the | |
7661 | stubs, as adding more stubs increases the chance that | |
7662 | branches may not reach into the stub section. */ | |
7663 | if (!stubs_always_before_branch && !big_sec) | |
7664 | { | |
7665 | total = 0; | |
7666 | while (prev != NULL | |
7667 | && ((total += tail->output_offset - prev->output_offset) | |
7668 | < stub_group_size) | |
7669 | && htab->stub_group[prev->id].toc_off == curr_toc) | |
7670 | { | |
7671 | tail = prev; | |
7672 | prev = PREV_SEC (tail); | |
7673 | htab->stub_group[tail->id].link_sec = curr; | |
7674 | } | |
7675 | } | |
7676 | tail = prev; | |
721956f4 AM |
7677 | } |
7678 | } | |
734b6cf9 AM |
7679 | while (list-- != htab->input_list); |
7680 | free (htab->input_list); | |
721956f4 AM |
7681 | #undef PREV_SEC |
7682 | } | |
7683 | ||
721956f4 AM |
7684 | /* Determine and set the size of the stub section for a final link. |
7685 | ||
7686 | The basic idea here is to examine all the relocations looking for | |
7687 | PC-relative calls to a target that is unreachable with a "bl" | |
7688 | instruction. */ | |
7689 | ||
b34976b6 | 7690 | bfd_boolean |
4ce794b7 | 7691 | ppc64_elf_size_stubs (bfd *output_bfd, |
4ce794b7 AM |
7692 | struct bfd_link_info *info, |
7693 | bfd_signed_vma group_size, | |
7694 | asection *(*add_stub_section) (const char *, asection *), | |
7695 | void (*layout_sections_again) (void)) | |
721956f4 AM |
7696 | { |
7697 | bfd_size_type stub_group_size; | |
b34976b6 | 7698 | bfd_boolean stubs_always_before_branch; |
721956f4 AM |
7699 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
7700 | ||
7701 | /* Stash our params away. */ | |
721956f4 AM |
7702 | htab->add_stub_section = add_stub_section; |
7703 | htab->layout_sections_again = layout_sections_again; | |
7704 | stubs_always_before_branch = group_size < 0; | |
7705 | if (group_size < 0) | |
7706 | stub_group_size = -group_size; | |
7707 | else | |
7708 | stub_group_size = group_size; | |
7709 | if (stub_group_size == 1) | |
7710 | { | |
7711 | /* Default values. */ | |
58ac9f71 AM |
7712 | if (stubs_always_before_branch) |
7713 | { | |
7714 | stub_group_size = 0x1e00000; | |
7715 | if (htab->has_14bit_branch) | |
7716 | stub_group_size = 0x7800; | |
7717 | } | |
7718 | else | |
7719 | { | |
7720 | stub_group_size = 0x1c00000; | |
7721 | if (htab->has_14bit_branch) | |
7722 | stub_group_size = 0x7000; | |
7723 | } | |
721956f4 AM |
7724 | } |
7725 | ||
7726 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
7727 | ||
721956f4 AM |
7728 | while (1) |
7729 | { | |
7730 | bfd *input_bfd; | |
7731 | unsigned int bfd_indx; | |
7732 | asection *stub_sec; | |
b34976b6 | 7733 | bfd_boolean stub_changed; |
721956f4 AM |
7734 | |
7735 | htab->stub_iteration += 1; | |
b34976b6 | 7736 | stub_changed = FALSE; |
721956f4 AM |
7737 | |
7738 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
7739 | input_bfd != NULL; | |
7740 | input_bfd = input_bfd->link_next, bfd_indx++) | |
7741 | { | |
7742 | Elf_Internal_Shdr *symtab_hdr; | |
7743 | asection *section; | |
6cdc0ccc | 7744 | Elf_Internal_Sym *local_syms = NULL; |
721956f4 AM |
7745 | |
7746 | /* We'll need the symbol table in a second. */ | |
7747 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
7748 | if (symtab_hdr->sh_info == 0) | |
7749 | continue; | |
7750 | ||
721956f4 AM |
7751 | /* Walk over each section attached to the input bfd. */ |
7752 | for (section = input_bfd->sections; | |
7753 | section != NULL; | |
7754 | section = section->next) | |
7755 | { | |
721956f4 | 7756 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
721956f4 AM |
7757 | |
7758 | /* If there aren't any relocs, then there's nothing more | |
7759 | to do. */ | |
7760 | if ((section->flags & SEC_RELOC) == 0 | |
7761 | || section->reloc_count == 0) | |
7762 | continue; | |
7763 | ||
7764 | /* If this section is a link-once section that will be | |
7765 | discarded, then don't create any stubs. */ | |
7766 | if (section->output_section == NULL | |
7767 | || section->output_section->owner != output_bfd) | |
7768 | continue; | |
7769 | ||
1e2f5b6e AM |
7770 | /* Get the relocs. */ |
7771 | internal_relocs | |
4ce794b7 | 7772 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
45d6a902 | 7773 | info->keep_memory); |
721956f4 | 7774 | if (internal_relocs == NULL) |
1e2f5b6e | 7775 | goto error_ret_free_local; |
721956f4 AM |
7776 | |
7777 | /* Now examine each relocation. */ | |
7778 | irela = internal_relocs; | |
7779 | irelaend = irela + section->reloc_count; | |
7780 | for (; irela < irelaend; irela++) | |
7781 | { | |
4ce794b7 AM |
7782 | enum elf_ppc64_reloc_type r_type; |
7783 | unsigned int r_indx; | |
721956f4 AM |
7784 | enum ppc_stub_type stub_type; |
7785 | struct ppc_stub_hash_entry *stub_entry; | |
8387904d | 7786 | asection *sym_sec, *code_sec; |
721956f4 AM |
7787 | bfd_vma sym_value; |
7788 | bfd_vma destination; | |
8843416a | 7789 | bfd_boolean ok_dest; |
721956f4 | 7790 | struct ppc_link_hash_entry *hash; |
8387904d | 7791 | struct ppc_link_hash_entry *fdh; |
411e1bfb AM |
7792 | struct elf_link_hash_entry *h; |
7793 | Elf_Internal_Sym *sym; | |
721956f4 AM |
7794 | char *stub_name; |
7795 | const asection *id_sec; | |
8387904d | 7796 | long *opd_adjust; |
721956f4 AM |
7797 | |
7798 | r_type = ELF64_R_TYPE (irela->r_info); | |
7799 | r_indx = ELF64_R_SYM (irela->r_info); | |
7800 | ||
4ce794b7 | 7801 | if (r_type >= R_PPC64_max) |
721956f4 AM |
7802 | { |
7803 | bfd_set_error (bfd_error_bad_value); | |
6cdc0ccc | 7804 | goto error_ret_free_internal; |
721956f4 AM |
7805 | } |
7806 | ||
7807 | /* Only look for stubs on branch instructions. */ | |
4ce794b7 AM |
7808 | if (r_type != R_PPC64_REL24 |
7809 | && r_type != R_PPC64_REL14 | |
7810 | && r_type != R_PPC64_REL14_BRTAKEN | |
7811 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
721956f4 AM |
7812 | continue; |
7813 | ||
7814 | /* Now determine the call target, its name, value, | |
7815 | section. */ | |
411e1bfb AM |
7816 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
7817 | r_indx, input_bfd)) | |
7818 | goto error_ret_free_internal; | |
7819 | hash = (struct ppc_link_hash_entry *) h; | |
7820 | ||
8843416a | 7821 | ok_dest = FALSE; |
8387904d | 7822 | fdh = NULL; |
411e1bfb | 7823 | if (hash == NULL) |
721956f4 | 7824 | { |
411e1bfb | 7825 | sym_value = sym->st_value; |
8843416a | 7826 | ok_dest = TRUE; |
721956f4 AM |
7827 | } |
7828 | else | |
7829 | { | |
411e1bfb | 7830 | sym_value = 0; |
99877b66 AM |
7831 | /* Recognise an old ABI func code entry sym, and |
7832 | use the func descriptor sym instead. */ | |
7833 | if (hash->elf.root.type == bfd_link_hash_undefweak | |
8387904d AM |
7834 | && hash->elf.root.root.string[0] == '.' |
7835 | && (fdh = get_fdh (hash, htab)) != NULL) | |
7836 | { | |
8387904d AM |
7837 | if (fdh->elf.root.type == bfd_link_hash_defined |
7838 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
7839 | { | |
7840 | sym_sec = fdh->elf.root.u.def.section; | |
7841 | sym_value = fdh->elf.root.u.def.value; | |
7842 | if (sym_sec->output_section != NULL) | |
7843 | ok_dest = TRUE; | |
7844 | } | |
99877b66 AM |
7845 | else |
7846 | fdh = NULL; | |
8387904d AM |
7847 | } |
7848 | else if (hash->elf.root.type == bfd_link_hash_defined | |
7849 | || hash->elf.root.type == bfd_link_hash_defweak) | |
721956f4 | 7850 | { |
721956f4 AM |
7851 | sym_value = hash->elf.root.u.def.value; |
7852 | if (sym_sec->output_section != NULL) | |
8843416a | 7853 | ok_dest = TRUE; |
721956f4 AM |
7854 | } |
7855 | else if (hash->elf.root.type == bfd_link_hash_undefweak) | |
7856 | ; | |
7857 | else if (hash->elf.root.type == bfd_link_hash_undefined) | |
7858 | ; | |
7859 | else | |
7860 | { | |
7861 | bfd_set_error (bfd_error_bad_value); | |
7862 | goto error_ret_free_internal; | |
7863 | } | |
7864 | } | |
7865 | ||
8843416a AM |
7866 | destination = 0; |
7867 | if (ok_dest) | |
7868 | { | |
7869 | sym_value += irela->r_addend; | |
7870 | destination = (sym_value | |
7871 | + sym_sec->output_offset | |
7872 | + sym_sec->output_section->vma); | |
7873 | } | |
7874 | ||
8387904d AM |
7875 | code_sec = sym_sec; |
7876 | opd_adjust = get_opd_info (sym_sec); | |
7877 | if (opd_adjust != NULL) | |
7878 | { | |
7879 | bfd_vma dest; | |
7880 | ||
7881 | if (hash == NULL) | |
7882 | { | |
3f764659 | 7883 | long adjust = opd_adjust[sym_value / 8]; |
8387904d AM |
7884 | if (adjust == -1) |
7885 | continue; | |
7886 | sym_value += adjust; | |
7887 | } | |
7888 | dest = opd_entry_value (sym_sec, sym_value, | |
7889 | &code_sec, &sym_value); | |
7890 | if (dest != (bfd_vma) -1) | |
7891 | { | |
7892 | destination = dest; | |
7893 | if (fdh != NULL) | |
7894 | { | |
7895 | /* Fixup old ABI sym to point at code | |
7896 | entry. */ | |
99877b66 | 7897 | hash->elf.root.type = bfd_link_hash_defweak; |
8387904d AM |
7898 | hash->elf.root.u.def.section = code_sec; |
7899 | hash->elf.root.u.def.value = sym_value; | |
7900 | } | |
7901 | } | |
7902 | } | |
7903 | ||
721956f4 AM |
7904 | /* Determine what (if any) linker stub is needed. */ |
7905 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
7906 | destination); | |
ad8e1ba5 AM |
7907 | |
7908 | if (stub_type != ppc_stub_plt_call) | |
7909 | { | |
7910 | /* Check whether we need a TOC adjusting stub. | |
7911 | Since the linker pastes together pieces from | |
7912 | different object files when creating the | |
7913 | _init and _fini functions, it may be that a | |
7914 | call to what looks like a local sym is in | |
7915 | fact a call needing a TOC adjustment. */ | |
8387904d AM |
7916 | if (code_sec != NULL |
7917 | && code_sec->output_section != NULL | |
7918 | && (htab->stub_group[code_sec->id].toc_off | |
9b5ecbd0 | 7919 | != htab->stub_group[section->id].toc_off) |
8387904d | 7920 | && code_sec->has_gp_reloc |
9b5ecbd0 | 7921 | && section->has_gp_reloc) |
ad8e1ba5 AM |
7922 | stub_type = ppc_stub_long_branch_r2off; |
7923 | } | |
7924 | ||
721956f4 AM |
7925 | if (stub_type == ppc_stub_none) |
7926 | continue; | |
7927 | ||
411e1bfb AM |
7928 | /* __tls_get_addr calls might be eliminated. */ |
7929 | if (stub_type != ppc_stub_plt_call | |
7930 | && hash != NULL | |
8387904d AM |
7931 | && (hash == htab->tls_get_addr |
7932 | || hash == htab->tls_get_addr_fd) | |
411e1bfb AM |
7933 | && section->has_tls_reloc |
7934 | && irela != internal_relocs) | |
7935 | { | |
7936 | /* Get tls info. */ | |
e7b938ca | 7937 | char *tls_mask; |
411e1bfb | 7938 | |
0d4792f7 | 7939 | if (!get_tls_mask (&tls_mask, NULL, &local_syms, |
411e1bfb AM |
7940 | irela - 1, input_bfd)) |
7941 | goto error_ret_free_internal; | |
e7b938ca | 7942 | if (*tls_mask != 0) |
411e1bfb AM |
7943 | continue; |
7944 | } | |
7945 | ||
721956f4 AM |
7946 | /* Support for grouping stub sections. */ |
7947 | id_sec = htab->stub_group[section->id].link_sec; | |
7948 | ||
7949 | /* Get the name of this stub. */ | |
7950 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
7951 | if (!stub_name) | |
7952 | goto error_ret_free_internal; | |
7953 | ||
7954 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
b34976b6 | 7955 | stub_name, FALSE, FALSE); |
721956f4 AM |
7956 | if (stub_entry != NULL) |
7957 | { | |
7958 | /* The proper stub has already been created. */ | |
7959 | free (stub_name); | |
7960 | continue; | |
7961 | } | |
7962 | ||
7963 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
7964 | if (stub_entry == NULL) | |
7965 | { | |
7966 | free (stub_name); | |
6cdc0ccc AM |
7967 | error_ret_free_internal: |
7968 | if (elf_section_data (section)->relocs == NULL) | |
7969 | free (internal_relocs); | |
7970 | error_ret_free_local: | |
7971 | if (local_syms != NULL | |
7972 | && (symtab_hdr->contents | |
7973 | != (unsigned char *) local_syms)) | |
7974 | free (local_syms); | |
b34976b6 | 7975 | return FALSE; |
721956f4 AM |
7976 | } |
7977 | ||
ad8e1ba5 | 7978 | stub_entry->stub_type = stub_type; |
721956f4 | 7979 | stub_entry->target_value = sym_value; |
8387904d | 7980 | stub_entry->target_section = code_sec; |
721956f4 | 7981 | stub_entry->h = hash; |
411e1bfb | 7982 | stub_entry->addend = irela->r_addend; |
b34976b6 | 7983 | stub_changed = TRUE; |
721956f4 AM |
7984 | } |
7985 | ||
7986 | /* We're done with the internal relocs, free them. */ | |
6cdc0ccc | 7987 | if (elf_section_data (section)->relocs != internal_relocs) |
1e2f5b6e | 7988 | free (internal_relocs); |
721956f4 | 7989 | } |
6cdc0ccc AM |
7990 | |
7991 | if (local_syms != NULL | |
7992 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
7993 | { | |
7994 | if (!info->keep_memory) | |
7995 | free (local_syms); | |
7996 | else | |
7997 | symtab_hdr->contents = (unsigned char *) local_syms; | |
7998 | } | |
721956f4 AM |
7999 | } |
8000 | ||
8001 | if (!stub_changed) | |
8002 | break; | |
8003 | ||
8004 | /* OK, we've added some stubs. Find out the new size of the | |
8005 | stub sections. */ | |
8006 | for (stub_sec = htab->stub_bfd->sections; | |
8007 | stub_sec != NULL; | |
8008 | stub_sec = stub_sec->next) | |
e717da7e | 8009 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
eea6121a AM |
8010 | stub_sec->size = 0; |
8011 | ||
8012 | htab->brlt->size = 0; | |
63bc6f6c | 8013 | if (info->shared) |
eea6121a | 8014 | htab->relbrlt->size = 0; |
721956f4 | 8015 | |
63bc6f6c | 8016 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
721956f4 AM |
8017 | |
8018 | /* Ask the linker to do its stuff. */ | |
8019 | (*htab->layout_sections_again) (); | |
8020 | } | |
8021 | ||
afbe61cf AM |
8022 | /* It would be nice to strip .branch_lt from the output if the |
8023 | section is empty, but it's too late. If we strip sections here, | |
8024 | the dynamic symbol table is corrupted since the section symbol | |
8025 | for the stripped section isn't written. */ | |
721956f4 | 8026 | |
b34976b6 | 8027 | return TRUE; |
721956f4 AM |
8028 | } |
8029 | ||
8030 | /* Called after we have determined section placement. If sections | |
805fc799 | 8031 | move, we'll be called again. Provide a value for TOCstart. */ |
721956f4 | 8032 | |
805fc799 | 8033 | bfd_vma |
4ce794b7 | 8034 | ppc64_elf_toc (bfd *obfd) |
721956f4 | 8035 | { |
805fc799 AM |
8036 | asection *s; |
8037 | bfd_vma TOCstart; | |
721956f4 | 8038 | |
805fc799 AM |
8039 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
8040 | order. The TOC starts where the first of these sections starts. */ | |
8041 | s = bfd_get_section_by_name (obfd, ".got"); | |
8042 | if (s == NULL) | |
8043 | s = bfd_get_section_by_name (obfd, ".toc"); | |
8044 | if (s == NULL) | |
8045 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
8046 | if (s == NULL) | |
8047 | s = bfd_get_section_by_name (obfd, ".plt"); | |
8048 | if (s == NULL) | |
8049 | { | |
8050 | /* This may happen for | |
8051 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
8052 | .toc directive | |
8053 | o bad linker script | |
8054 | o --gc-sections and empty TOC sections | |
8055 | ||
8056 | FIXME: Warn user? */ | |
8057 | ||
8058 | /* Look for a likely section. We probably won't even be | |
8059 | using TOCstart. */ | |
8060 | for (s = obfd->sections; s != NULL; s = s->next) | |
8061 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
8062 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
8063 | break; | |
721956f4 | 8064 | if (s == NULL) |
805fc799 AM |
8065 | for (s = obfd->sections; s != NULL; s = s->next) |
8066 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
8067 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
8068 | break; | |
721956f4 | 8069 | if (s == NULL) |
805fc799 AM |
8070 | for (s = obfd->sections; s != NULL; s = s->next) |
8071 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
8072 | break; | |
721956f4 | 8073 | if (s == NULL) |
805fc799 AM |
8074 | for (s = obfd->sections; s != NULL; s = s->next) |
8075 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
8076 | break; | |
8077 | } | |
721956f4 | 8078 | |
805fc799 AM |
8079 | TOCstart = 0; |
8080 | if (s != NULL) | |
8081 | TOCstart = s->output_section->vma + s->output_offset; | |
721956f4 | 8082 | |
805fc799 | 8083 | return TOCstart; |
721956f4 AM |
8084 | } |
8085 | ||
8086 | /* Build all the stubs associated with the current output file. | |
8087 | The stubs are kept in a hash table attached to the main linker | |
8088 | hash table. This function is called via gldelf64ppc_finish. */ | |
8089 | ||
b34976b6 | 8090 | bfd_boolean |
4ce794b7 AM |
8091 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
8092 | struct bfd_link_info *info, | |
8093 | char **stats) | |
5d1634d7 AM |
8094 | { |
8095 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
721956f4 | 8096 | asection *stub_sec; |
5d1634d7 | 8097 | bfd_byte *p; |
e717da7e | 8098 | int stub_sec_count = 0; |
5d1634d7 | 8099 | |
ad8e1ba5 | 8100 | htab->emit_stub_syms = emit_stub_syms; |
eea6121a AM |
8101 | |
8102 | /* Allocate memory to hold the linker stubs. */ | |
721956f4 AM |
8103 | for (stub_sec = htab->stub_bfd->sections; |
8104 | stub_sec != NULL; | |
8105 | stub_sec = stub_sec->next) | |
eea6121a AM |
8106 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
8107 | && stub_sec->size != 0) | |
e717da7e | 8108 | { |
eea6121a AM |
8109 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
8110 | if (stub_sec->contents == NULL) | |
8111 | return FALSE; | |
8112 | /* We want to check that built size is the same as calculated | |
8113 | size. rawsize is a convenient location to use. */ | |
8114 | stub_sec->rawsize = stub_sec->size; | |
8115 | stub_sec->size = 0; | |
e717da7e | 8116 | } |
5d1634d7 | 8117 | |
4ce794b7 | 8118 | if (htab->plt != NULL) |
5d1634d7 | 8119 | { |
9f951329 | 8120 | unsigned int indx; |
ad8e1ba5 | 8121 | bfd_vma plt0; |
9f951329 | 8122 | |
721956f4 | 8123 | /* Build the .glink plt call stub. */ |
4ce794b7 AM |
8124 | plt0 = (htab->plt->output_section->vma |
8125 | + htab->plt->output_offset | |
8126 | - (htab->glink->output_section->vma | |
8127 | + htab->glink->output_offset | |
ad8e1ba5 AM |
8128 | + GLINK_CALL_STUB_SIZE)); |
8129 | if (plt0 + 0x80008000 > 0xffffffff) | |
721956f4 | 8130 | { |
ad8e1ba5 AM |
8131 | (*_bfd_error_handler) (_(".glink and .plt too far apart")); |
8132 | bfd_set_error (bfd_error_bad_value); | |
8133 | return FALSE; | |
721956f4 | 8134 | } |
721956f4 | 8135 | |
97b639ba AM |
8136 | if (htab->emit_stub_syms) |
8137 | { | |
8138 | struct elf_link_hash_entry *h; | |
8139 | h = elf_link_hash_lookup (&htab->elf, "__glink", TRUE, FALSE, FALSE); | |
8140 | if (h == NULL) | |
8141 | return FALSE; | |
8142 | if (h->root.type == bfd_link_hash_new) | |
8143 | { | |
8144 | h->root.type = bfd_link_hash_defined; | |
8145 | h->root.u.def.section = htab->glink; | |
8146 | h->root.u.def.value = 0; | |
8147 | h->elf_link_hash_flags = (ELF_LINK_HASH_REF_REGULAR | |
8148 | | ELF_LINK_HASH_DEF_REGULAR | |
8149 | | ELF_LINK_HASH_REF_REGULAR_NONWEAK | |
8150 | | ELF_LINK_FORCED_LOCAL); | |
8151 | } | |
8152 | } | |
4ce794b7 AM |
8153 | p = htab->glink->contents; |
8154 | bfd_put_32 (htab->glink->owner, MFCTR_R12, p); | |
ad8e1ba5 | 8155 | p += 4; |
4ce794b7 | 8156 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_3, p); |
ad8e1ba5 | 8157 | p += 4; |
4ce794b7 | 8158 | bfd_put_32 (htab->glink->owner, ADDIC_R2_R0_32K, p); |
ad8e1ba5 | 8159 | p += 4; |
4ce794b7 | 8160 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 8161 | p += 4; |
4ce794b7 | 8162 | bfd_put_32 (htab->glink->owner, SRADI_R2_R2_63, p); |
ad8e1ba5 | 8163 | p += 4; |
4ce794b7 | 8164 | bfd_put_32 (htab->glink->owner, SLDI_R11_R0_2, p); |
ad8e1ba5 | 8165 | p += 4; |
4ce794b7 | 8166 | bfd_put_32 (htab->glink->owner, AND_R2_R2_R11, p); |
ad8e1ba5 | 8167 | p += 4; |
4ce794b7 | 8168 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); |
ad8e1ba5 | 8169 | p += 4; |
4ce794b7 | 8170 | bfd_put_32 (htab->glink->owner, ADD_R12_R12_R2, p); |
ad8e1ba5 | 8171 | p += 4; |
4ce794b7 | 8172 | bfd_put_32 (htab->glink->owner, ADDIS_R12_R12 | PPC_HA (plt0), p); |
ad8e1ba5 | 8173 | p += 4; |
4ce794b7 | 8174 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 8175 | p += 4; |
4ce794b7 | 8176 | bfd_put_32 (htab->glink->owner, ADDI_R12_R12 | PPC_LO (plt0), p); |
ad8e1ba5 | 8177 | p += 4; |
4ce794b7 | 8178 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
ad8e1ba5 | 8179 | p += 4; |
4ce794b7 | 8180 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
ad8e1ba5 | 8181 | p += 4; |
4ce794b7 | 8182 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
ad8e1ba5 | 8183 | p += 4; |
4ce794b7 | 8184 | bfd_put_32 (htab->glink->owner, BCTR, p); |
ad8e1ba5 AM |
8185 | p += 4; |
8186 | ||
9f951329 AM |
8187 | /* Build the .glink lazy link call stubs. */ |
8188 | indx = 0; | |
eea6121a | 8189 | while (p < htab->glink->contents + htab->glink->size) |
9f951329 AM |
8190 | { |
8191 | if (indx < 0x8000) | |
8192 | { | |
4ce794b7 | 8193 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
9f951329 AM |
8194 | p += 4; |
8195 | } | |
8196 | else | |
8197 | { | |
4ce794b7 | 8198 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
9f951329 | 8199 | p += 4; |
4ce794b7 | 8200 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
9f951329 AM |
8201 | p += 4; |
8202 | } | |
4ce794b7 AM |
8203 | bfd_put_32 (htab->glink->owner, |
8204 | B_DOT | ((htab->glink->contents - p) & 0x3fffffc), p); | |
a16d5acb | 8205 | indx++; |
9f951329 AM |
8206 | p += 4; |
8207 | } | |
eea6121a | 8208 | htab->glink->rawsize = p - htab->glink->contents; |
5d1634d7 | 8209 | } |
5d1634d7 | 8210 | |
eea6121a | 8211 | if (htab->brlt->size != 0) |
721956f4 | 8212 | { |
4ce794b7 | 8213 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
eea6121a | 8214 | htab->brlt->size); |
4ce794b7 | 8215 | if (htab->brlt->contents == NULL) |
b34976b6 | 8216 | return FALSE; |
721956f4 | 8217 | } |
eea6121a | 8218 | if (info->shared && htab->relbrlt->size != 0) |
63bc6f6c AM |
8219 | { |
8220 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
eea6121a | 8221 | htab->relbrlt->size); |
63bc6f6c AM |
8222 | if (htab->relbrlt->contents == NULL) |
8223 | return FALSE; | |
8224 | } | |
5d1634d7 | 8225 | |
721956f4 AM |
8226 | /* Build the stubs as directed by the stub hash table. */ |
8227 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
5d1634d7 | 8228 | |
721956f4 AM |
8229 | for (stub_sec = htab->stub_bfd->sections; |
8230 | stub_sec != NULL; | |
8231 | stub_sec = stub_sec->next) | |
e717da7e AM |
8232 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
8233 | { | |
8234 | stub_sec_count += 1; | |
eea6121a | 8235 | if (stub_sec->rawsize != stub_sec->size) |
e717da7e AM |
8236 | break; |
8237 | } | |
5d1634d7 | 8238 | |
721956f4 | 8239 | if (stub_sec != NULL |
eea6121a | 8240 | || htab->glink->rawsize != htab->glink->size) |
5d1634d7 | 8241 | { |
b34976b6 | 8242 | htab->stub_error = TRUE; |
721956f4 | 8243 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
5d1634d7 | 8244 | } |
721956f4 | 8245 | |
d2a300cf AM |
8246 | if (htab->stub_error) |
8247 | return FALSE; | |
8248 | ||
8249 | if (stats != NULL) | |
8250 | { | |
8251 | *stats = bfd_malloc (500); | |
8252 | if (*stats == NULL) | |
8253 | return FALSE; | |
8254 | ||
8255 | sprintf (*stats, _("linker stubs in %u groups\n" | |
8256 | " branch %lu\n" | |
8257 | " toc adjust %lu\n" | |
8258 | " long branch %lu\n" | |
8259 | " long toc adj %lu\n" | |
8260 | " plt call %lu"), | |
e717da7e | 8261 | stub_sec_count, |
4ce794b7 AM |
8262 | htab->stub_count[ppc_stub_long_branch - 1], |
8263 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
8264 | htab->stub_count[ppc_stub_plt_branch - 1], | |
8265 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
8266 | htab->stub_count[ppc_stub_plt_call - 1]); | |
d2a300cf AM |
8267 | } |
8268 | return TRUE; | |
5bd4f169 AM |
8269 | } |
8270 | ||
99877b66 AM |
8271 | /* This function undoes the changes made by add_symbol_adjust. */ |
8272 | ||
8273 | static bfd_boolean | |
8274 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
8275 | { | |
8276 | struct ppc_link_hash_entry *eh; | |
8277 | ||
8278 | if (h->root.type == bfd_link_hash_indirect) | |
8279 | return TRUE; | |
8280 | ||
8281 | if (h->root.type == bfd_link_hash_warning) | |
8282 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8283 | ||
8284 | eh = (struct ppc_link_hash_entry *) h; | |
8285 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
8286 | return TRUE; | |
8287 | ||
8288 | eh->elf.root.type = bfd_link_hash_undefined; | |
8289 | return TRUE; | |
8290 | } | |
8291 | ||
8292 | void | |
8293 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
8294 | { | |
8295 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
8296 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
8297 | } | |
8298 | ||
5bd4f169 AM |
8299 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
8300 | to handle the relocations for a section. | |
8301 | ||
8302 | The relocs are always passed as Rela structures; if the section | |
8303 | actually uses Rel structures, the r_addend field will always be | |
8304 | zero. | |
8305 | ||
8306 | This function is responsible for adjust the section contents as | |
8307 | necessary, and (if using Rela relocs and generating a | |
1049f94e | 8308 | relocatable output file) adjusting the reloc addend as |
5bd4f169 AM |
8309 | necessary. |
8310 | ||
8311 | This function does not have to worry about setting the reloc | |
8312 | address or the reloc symbol index. | |
8313 | ||
8314 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
8315 | ||
8316 | LOCAL_SECTIONS is an array giving the section in the input file | |
8317 | corresponding to the st_shndx field of each local symbol. | |
8318 | ||
8319 | The global hash table entry for the global symbols can be found | |
8320 | via elf_sym_hashes (input_bfd). | |
8321 | ||
1049f94e | 8322 | When generating relocatable output, this function must handle |
5bd4f169 AM |
8323 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
8324 | going to be the section symbol corresponding to the output | |
8325 | section, which means that the addend must be adjusted | |
8326 | accordingly. */ | |
8327 | ||
b34976b6 | 8328 | static bfd_boolean |
4ce794b7 AM |
8329 | ppc64_elf_relocate_section (bfd *output_bfd, |
8330 | struct bfd_link_info *info, | |
8331 | bfd *input_bfd, | |
8332 | asection *input_section, | |
8333 | bfd_byte *contents, | |
8334 | Elf_Internal_Rela *relocs, | |
8335 | Elf_Internal_Sym *local_syms, | |
8336 | asection **local_sections) | |
5bd4f169 | 8337 | { |
65f38f15 | 8338 | struct ppc_link_hash_table *htab; |
5bd4f169 AM |
8339 | Elf_Internal_Shdr *symtab_hdr; |
8340 | struct elf_link_hash_entry **sym_hashes; | |
5bd4f169 AM |
8341 | Elf_Internal_Rela *rel; |
8342 | Elf_Internal_Rela *relend; | |
411e1bfb AM |
8343 | Elf_Internal_Rela outrel; |
8344 | bfd_byte *loc; | |
411e1bfb | 8345 | struct got_entry **local_got_ents; |
5bd4f169 | 8346 | bfd_vma TOCstart; |
b34976b6 AM |
8347 | bfd_boolean ret = TRUE; |
8348 | bfd_boolean is_opd; | |
96e0dda4 | 8349 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
b34976b6 | 8350 | bfd_boolean is_power4 = FALSE; |
5bd4f169 | 8351 | |
1049f94e | 8352 | if (info->relocatable) |
b34976b6 | 8353 | return TRUE; |
b491616a | 8354 | |
65f38f15 | 8355 | /* Initialize howto table if needed. */ |
5bd4f169 | 8356 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
5bd4f169 AM |
8357 | ppc_howto_init (); |
8358 | ||
65f38f15 | 8359 | htab = ppc_hash_table (info); |
411e1bfb | 8360 | local_got_ents = elf_local_got_ents (input_bfd); |
5bd4f169 | 8361 | TOCstart = elf_gp (output_bfd); |
5bd4f169 AM |
8362 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
8363 | sym_hashes = elf_sym_hashes (input_bfd); | |
f0abc2a1 | 8364 | is_opd = ppc64_elf_section_data (input_section)->opd.adjust != NULL; |
65f38f15 | 8365 | |
5bd4f169 AM |
8366 | rel = relocs; |
8367 | relend = relocs + input_section->reloc_count; | |
8368 | for (; rel < relend; rel++) | |
8369 | { | |
04c9666a | 8370 | enum elf_ppc64_reloc_type r_type; |
5bd4f169 AM |
8371 | bfd_vma addend; |
8372 | bfd_reloc_status_type r; | |
8373 | Elf_Internal_Sym *sym; | |
8374 | asection *sec; | |
039b3fef AM |
8375 | struct elf_link_hash_entry *h_elf; |
8376 | struct ppc_link_hash_entry *h; | |
8377 | struct ppc_link_hash_entry *fdh; | |
5bd4f169 | 8378 | const char *sym_name; |
0d4792f7 | 8379 | unsigned long r_symndx, toc_symndx; |
951fd09b | 8380 | char tls_mask, tls_gd, tls_type; |
0d4792f7 | 8381 | char sym_type; |
5bd4f169 | 8382 | bfd_vma relocation; |
b34976b6 AM |
8383 | bfd_boolean unresolved_reloc; |
8384 | bfd_boolean warned; | |
50bc7936 | 8385 | unsigned long insn, mask; |
721956f4 AM |
8386 | struct ppc_stub_hash_entry *stub_entry; |
8387 | bfd_vma max_br_offset; | |
8388 | bfd_vma from; | |
5bd4f169 | 8389 | |
4ce794b7 | 8390 | r_type = ELF64_R_TYPE (rel->r_info); |
5bd4f169 | 8391 | r_symndx = ELF64_R_SYM (rel->r_info); |
ee87f2da AM |
8392 | |
8393 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
8394 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
8395 | proper TOC base to use. */ | |
8396 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
8397 | && rel != relocs | |
8398 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
8399 | && is_opd) | |
8400 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
8401 | ||
4ce794b7 AM |
8402 | sym = NULL; |
8403 | sec = NULL; | |
039b3fef | 8404 | h_elf = NULL; |
4ce794b7 | 8405 | sym_name = NULL; |
b34976b6 AM |
8406 | unresolved_reloc = FALSE; |
8407 | warned = FALSE; | |
65f38f15 | 8408 | |
0b13192e | 8409 | if (r_symndx < symtab_hdr->sh_info) |
5bd4f169 AM |
8410 | { |
8411 | /* It's a local symbol. */ | |
4025353c AM |
8412 | long *opd_adjust; |
8413 | ||
5bd4f169 AM |
8414 | sym = local_syms + r_symndx; |
8415 | sec = local_sections[r_symndx]; | |
411e1bfb | 8416 | sym_name = bfd_elf_local_sym_name (input_bfd, sym); |
0d4792f7 | 8417 | sym_type = ELF64_ST_TYPE (sym->st_info); |
8517fae7 | 8418 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
4025353c AM |
8419 | opd_adjust = get_opd_info (sec); |
8420 | if (opd_adjust != NULL) | |
1e2f5b6e | 8421 | { |
3f764659 | 8422 | long adjust = opd_adjust[(sym->st_value + rel->r_addend) / 8]; |
4025353c AM |
8423 | if (adjust == -1) |
8424 | relocation = 0; | |
8425 | else | |
8426 | relocation += adjust; | |
1e2f5b6e | 8427 | } |
5bd4f169 AM |
8428 | } |
8429 | else | |
8430 | { | |
b2a8e766 AM |
8431 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
8432 | r_symndx, symtab_hdr, sym_hashes, | |
039b3fef | 8433 | h_elf, sec, relocation, |
b2a8e766 | 8434 | unresolved_reloc, warned); |
039b3fef AM |
8435 | sym_name = h_elf->root.root.string; |
8436 | sym_type = h_elf->type; | |
5bd4f169 | 8437 | } |
039b3fef | 8438 | h = (struct ppc_link_hash_entry *) h_elf; |
5bd4f169 | 8439 | |
951fd09b AM |
8440 | /* TLS optimizations. Replace instruction sequences and relocs |
8441 | based on information we collected in tls_optimize. We edit | |
8442 | RELOCS so that --emit-relocs will output something sensible | |
8443 | for the final instruction stream. */ | |
8444 | tls_mask = 0; | |
8445 | tls_gd = 0; | |
0d4792f7 | 8446 | toc_symndx = 0; |
d881513a | 8447 | if (IS_PPC64_TLS_RELOC (r_type)) |
411e1bfb AM |
8448 | { |
8449 | if (h != NULL) | |
039b3fef | 8450 | tls_mask = h->tls_mask; |
411e1bfb AM |
8451 | else if (local_got_ents != NULL) |
8452 | { | |
e7b938ca AM |
8453 | char *lgot_masks; |
8454 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
8455 | tls_mask = lgot_masks[r_symndx]; | |
411e1bfb | 8456 | } |
0d4792f7 AM |
8457 | if (tls_mask == 0 && r_type == R_PPC64_TLS) |
8458 | { | |
8459 | /* Check for toc tls entries. */ | |
8460 | char *toc_tls; | |
8461 | ||
8462 | if (!get_tls_mask (&toc_tls, &toc_symndx, &local_syms, | |
8463 | rel, input_bfd)) | |
8464 | return FALSE; | |
8465 | ||
8466 | if (toc_tls) | |
8467 | tls_mask = *toc_tls; | |
8468 | } | |
8469 | } | |
8470 | ||
8471 | /* Check that tls relocs are used with tls syms, and non-tls | |
8472 | relocs are used with non-tls syms. */ | |
8473 | if (r_symndx != 0 | |
8474 | && r_type != R_PPC64_NONE | |
8475 | && (h == NULL | |
039b3fef AM |
8476 | || h->elf.root.type == bfd_link_hash_defined |
8477 | || h->elf.root.type == bfd_link_hash_defweak) | |
0d4792f7 AM |
8478 | && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) |
8479 | { | |
8480 | if (r_type == R_PPC64_TLS && tls_mask != 0) | |
8481 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ | |
8482 | ; | |
8483 | else | |
8484 | (*_bfd_error_handler) | |
8485 | (sym_type == STT_TLS | |
d003868e AM |
8486 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
8487 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
8488 | input_bfd, | |
8489 | input_section, | |
0d4792f7 AM |
8490 | (long) rel->r_offset, |
8491 | ppc64_elf_howto_table[r_type]->name, | |
8492 | sym_name); | |
411e1bfb AM |
8493 | } |
8494 | ||
8495 | /* Ensure reloc mapping code below stays sane. */ | |
8496 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
8497 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
8498 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
8499 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
8500 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
8501 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
8502 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
8503 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
8504 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
8505 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
8506 | abort (); | |
0d4792f7 | 8507 | |
411e1bfb AM |
8508 | switch (r_type) |
8509 | { | |
8510 | default: | |
411e1bfb AM |
8511 | break; |
8512 | ||
8513 | case R_PPC64_TOC16: | |
8514 | case R_PPC64_TOC16_LO: | |
8515 | case R_PPC64_TOC16_DS: | |
8516 | case R_PPC64_TOC16_LO_DS: | |
411e1bfb AM |
8517 | { |
8518 | /* Check for toc tls entries. */ | |
8519 | char *toc_tls; | |
951fd09b | 8520 | int retval; |
411e1bfb | 8521 | |
0d4792f7 AM |
8522 | retval = get_tls_mask (&toc_tls, &toc_symndx, &local_syms, |
8523 | rel, input_bfd); | |
951fd09b | 8524 | if (retval == 0) |
411e1bfb AM |
8525 | return FALSE; |
8526 | ||
8527 | if (toc_tls) | |
8528 | { | |
951fd09b | 8529 | tls_mask = *toc_tls; |
411e1bfb AM |
8530 | if (r_type == R_PPC64_TOC16_DS |
8531 | || r_type == R_PPC64_TOC16_LO_DS) | |
81407a69 AM |
8532 | { |
8533 | if (tls_mask != 0 | |
8534 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
8535 | goto toctprel; | |
8536 | } | |
411e1bfb | 8537 | else |
951fd09b AM |
8538 | { |
8539 | /* If we found a GD reloc pair, then we might be | |
8540 | doing a GD->IE transition. */ | |
8541 | if (retval == 2) | |
8542 | { | |
8543 | tls_gd = TLS_TPRELGD; | |
8544 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
8545 | goto tls_get_addr_check; | |
8546 | } | |
8547 | else if (retval == 3) | |
8548 | { | |
8549 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
8550 | goto tls_get_addr_check; | |
8551 | } | |
8552 | } | |
411e1bfb AM |
8553 | } |
8554 | } | |
8555 | break; | |
8556 | ||
8557 | case R_PPC64_GOT_TPREL16_DS: | |
8558 | case R_PPC64_GOT_TPREL16_LO_DS: | |
951fd09b AM |
8559 | if (tls_mask != 0 |
8560 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 8561 | { |
81407a69 | 8562 | toctprel: |
411e1bfb AM |
8563 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2); |
8564 | insn &= 31 << 21; | |
8565 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
8566 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2); | |
8567 | r_type = R_PPC64_TPREL16_HA; | |
0d4792f7 AM |
8568 | if (toc_symndx != 0) |
8569 | { | |
8570 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
8571 | /* We changed the symbol. Start over in order to | |
8572 | get h, sym, sec etc. right. */ | |
8573 | rel--; | |
8574 | continue; | |
8575 | } | |
8576 | else | |
8577 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
8578 | } |
8579 | break; | |
8580 | ||
8581 | case R_PPC64_TLS: | |
951fd09b AM |
8582 | if (tls_mask != 0 |
8583 | && (tls_mask & TLS_TPREL) == 0) | |
411e1bfb | 8584 | { |
50bc7936 | 8585 | bfd_vma rtra; |
411e1bfb | 8586 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
772119ce | 8587 | if ((insn & ((0x3f << 26) | (31 << 11))) |
411e1bfb AM |
8588 | == ((31 << 26) | (13 << 11))) |
8589 | rtra = insn & ((1 << 26) - (1 << 16)); | |
772119ce | 8590 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
411e1bfb AM |
8591 | == ((31 << 26) | (13 << 16))) |
8592 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
8593 | else | |
8594 | abort (); | |
8595 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
8596 | /* add -> addi. */ | |
8597 | insn = 14 << 26; | |
8598 | else if ((insn & (31 << 1)) == 23 << 1 | |
8599 | && ((insn & (31 << 6)) < 14 << 6 | |
8600 | || ((insn & (31 << 6)) >= 16 << 6 | |
8601 | && (insn & (31 << 6)) < 24 << 6))) | |
8602 | /* load and store indexed -> dform. */ | |
8603 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
8604 | else if ((insn & (31 << 1)) == 21 << 1 | |
8605 | && (insn & (0x1a << 6)) == 0) | |
8606 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
8607 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
8608 | | ((insn >> 6) & 1)); | |
8609 | else if ((insn & (31 << 1)) == 21 << 1 | |
8610 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
8611 | /* lwax -> lwa. */ | |
8612 | insn = (58 << 26) | 2; | |
8613 | else | |
8614 | abort (); | |
8615 | insn |= rtra; | |
8616 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
411e1bfb AM |
8617 | /* Was PPC64_TLS which sits on insn boundary, now |
8618 | PPC64_TPREL16_LO which is at insn+2. */ | |
8619 | rel->r_offset += 2; | |
0d4792f7 AM |
8620 | r_type = R_PPC64_TPREL16_LO; |
8621 | if (toc_symndx != 0) | |
8622 | { | |
8623 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
8624 | /* We changed the symbol. Start over in order to | |
8625 | get h, sym, sec etc. right. */ | |
8626 | rel--; | |
8627 | continue; | |
8628 | } | |
8629 | else | |
8630 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
8631 | } |
8632 | break; | |
8633 | ||
411e1bfb AM |
8634 | case R_PPC64_GOT_TLSGD16_HI: |
8635 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b AM |
8636 | tls_gd = TLS_TPRELGD; |
8637 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
8638 | goto tls_gdld_hi; | |
8639 | break; | |
8640 | ||
411e1bfb AM |
8641 | case R_PPC64_GOT_TLSLD16_HI: |
8642 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 8643 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
411e1bfb | 8644 | { |
951fd09b AM |
8645 | tls_gdld_hi: |
8646 | if ((tls_mask & tls_gd) != 0) | |
8647 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
8648 | + R_PPC64_GOT_TPREL16_DS); | |
8649 | else | |
411e1bfb | 8650 | { |
951fd09b AM |
8651 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
8652 | rel->r_offset -= 2; | |
8653 | r_type = R_PPC64_NONE; | |
411e1bfb | 8654 | } |
951fd09b | 8655 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb AM |
8656 | } |
8657 | break; | |
8658 | ||
951fd09b AM |
8659 | case R_PPC64_GOT_TLSGD16: |
8660 | case R_PPC64_GOT_TLSGD16_LO: | |
8661 | tls_gd = TLS_TPRELGD; | |
8662 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
8663 | goto tls_get_addr_check; | |
8664 | break; | |
411e1bfb | 8665 | |
951fd09b AM |
8666 | case R_PPC64_GOT_TLSLD16: |
8667 | case R_PPC64_GOT_TLSLD16_LO: | |
8668 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
8669 | { | |
8670 | tls_get_addr_check: | |
8671 | if (rel + 1 < relend) | |
411e1bfb | 8672 | { |
951fd09b AM |
8673 | enum elf_ppc64_reloc_type r_type2; |
8674 | unsigned long r_symndx2; | |
8675 | struct elf_link_hash_entry *h2; | |
8676 | bfd_vma insn1, insn2, insn3; | |
8677 | bfd_vma offset; | |
8678 | ||
8679 | /* The next instruction should be a call to | |
8680 | __tls_get_addr. Peek at the reloc to be sure. */ | |
4ce794b7 | 8681 | r_type2 = ELF64_R_TYPE (rel[1].r_info); |
951fd09b AM |
8682 | r_symndx2 = ELF64_R_SYM (rel[1].r_info); |
8683 | if (r_symndx2 < symtab_hdr->sh_info | |
8684 | || (r_type2 != R_PPC64_REL14 | |
8685 | && r_type2 != R_PPC64_REL14_BRTAKEN | |
8686 | && r_type2 != R_PPC64_REL14_BRNTAKEN | |
8687 | && r_type2 != R_PPC64_REL24)) | |
8688 | break; | |
8689 | ||
8690 | h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info]; | |
8691 | while (h2->root.type == bfd_link_hash_indirect | |
8692 | || h2->root.type == bfd_link_hash_warning) | |
8693 | h2 = (struct elf_link_hash_entry *) h2->root.u.i.link; | |
8387904d AM |
8694 | if (h2 == NULL || (h2 != &htab->tls_get_addr->elf |
8695 | && h2 != &htab->tls_get_addr_fd->elf)) | |
951fd09b AM |
8696 | break; |
8697 | ||
8698 | /* OK, it checks out. Replace the call. */ | |
8699 | offset = rel[1].r_offset; | |
8700 | insn1 = bfd_get_32 (output_bfd, | |
8701 | contents + rel->r_offset - 2); | |
8702 | insn3 = bfd_get_32 (output_bfd, | |
8703 | contents + offset + 4); | |
8704 | if ((tls_mask & tls_gd) != 0) | |
411e1bfb | 8705 | { |
951fd09b AM |
8706 | /* IE */ |
8707 | insn1 &= (1 << 26) - (1 << 2); | |
8708 | insn1 |= 58 << 26; /* ld */ | |
8709 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
8710 | rel[1].r_info = ELF64_R_INFO (r_symndx2, R_PPC64_NONE); | |
8711 | if ((tls_mask & TLS_EXPLICIT) == 0) | |
8712 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
8713 | + R_PPC64_GOT_TPREL16_DS); | |
8714 | else | |
8715 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; | |
8716 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
411e1bfb AM |
8717 | } |
8718 | else | |
951fd09b AM |
8719 | { |
8720 | /* LE */ | |
8721 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
8722 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
8723 | if (tls_gd == 0) | |
8724 | { | |
8725 | /* Was an LD reloc. */ | |
8726 | r_symndx = 0; | |
e1918d23 AM |
8727 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
8728 | rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
951fd09b | 8729 | } |
0d4792f7 AM |
8730 | else if (toc_symndx != 0) |
8731 | r_symndx = toc_symndx; | |
951fd09b AM |
8732 | r_type = R_PPC64_TPREL16_HA; |
8733 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
8734 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
8735 | R_PPC64_TPREL16_LO); | |
8736 | rel[1].r_offset += 2; | |
8737 | } | |
8738 | if (insn3 == NOP | |
8739 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
8740 | { | |
8741 | insn3 = insn2; | |
8742 | insn2 = NOP; | |
8743 | rel[1].r_offset += 4; | |
8744 | } | |
8745 | bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2); | |
8746 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
8747 | bfd_put_32 (output_bfd, insn3, contents + offset + 4); | |
0d4792f7 | 8748 | if (tls_gd == 0 || toc_symndx != 0) |
951fd09b | 8749 | { |
0d4792f7 AM |
8750 | /* We changed the symbol. Start over in order |
8751 | to get h, sym, sec etc. right. */ | |
951fd09b AM |
8752 | rel--; |
8753 | continue; | |
8754 | } | |
411e1bfb | 8755 | } |
411e1bfb | 8756 | } |
411e1bfb AM |
8757 | break; |
8758 | ||
8759 | case R_PPC64_DTPMOD64: | |
951fd09b AM |
8760 | if (rel + 1 < relend |
8761 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
8762 | && rel[1].r_offset == rel->r_offset + 8) | |
411e1bfb | 8763 | { |
951fd09b AM |
8764 | if ((tls_mask & TLS_GD) == 0) |
8765 | { | |
8766 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
8767 | if ((tls_mask & TLS_TPRELGD) != 0) | |
8768 | r_type = R_PPC64_TPREL64; | |
8769 | else | |
8770 | { | |
4ce794b7 | 8771 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
951fd09b AM |
8772 | r_type = R_PPC64_NONE; |
8773 | } | |
8774 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
8775 | } | |
8776 | } | |
8777 | else | |
8778 | { | |
8779 | if ((tls_mask & TLS_LD) == 0) | |
411e1bfb | 8780 | { |
4ce794b7 | 8781 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
411e1bfb | 8782 | r_type = R_PPC64_NONE; |
951fd09b | 8783 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
411e1bfb | 8784 | } |
411e1bfb AM |
8785 | } |
8786 | break; | |
8787 | ||
8788 | case R_PPC64_TPREL64: | |
951fd09b | 8789 | if ((tls_mask & TLS_TPREL) == 0) |
411e1bfb AM |
8790 | { |
8791 | r_type = R_PPC64_NONE; | |
8792 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
8793 | } | |
8794 | break; | |
8795 | } | |
8796 | ||
8797 | /* Handle other relocations that tweak non-addend part of insn. */ | |
86c76c7b | 8798 | insn = 0; |
b25116a9 AM |
8799 | max_br_offset = 1 << 25; |
8800 | addend = rel->r_addend; | |
65f38f15 | 8801 | switch (r_type) |
5bd4f169 AM |
8802 | { |
8803 | default: | |
65f38f15 | 8804 | break; |
5bd4f169 | 8805 | |
65f38f15 AM |
8806 | /* Branch taken prediction relocations. */ |
8807 | case R_PPC64_ADDR14_BRTAKEN: | |
8808 | case R_PPC64_REL14_BRTAKEN: | |
cedb70c5 KH |
8809 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
8810 | /* Fall thru. */ | |
65f38f15 | 8811 | |
86c76c7b | 8812 | /* Branch not taken prediction relocations. */ |
65f38f15 AM |
8813 | case R_PPC64_ADDR14_BRNTAKEN: |
8814 | case R_PPC64_REL14_BRNTAKEN: | |
411e1bfb AM |
8815 | insn |= bfd_get_32 (output_bfd, |
8816 | contents + rel->r_offset) & ~(0x01 << 21); | |
b25116a9 | 8817 | /* Fall thru. */ |
86c76c7b | 8818 | |
b25116a9 AM |
8819 | case R_PPC64_REL14: |
8820 | max_br_offset = 1 << 15; | |
8821 | /* Fall thru. */ | |
5bd4f169 | 8822 | |
65f38f15 | 8823 | case R_PPC64_REL24: |
ad8e1ba5 AM |
8824 | /* Calls to functions with a different TOC, such as calls to |
8825 | shared objects, need to alter the TOC pointer. This is | |
8826 | done using a linkage stub. A REL24 branching to these | |
8827 | linkage stubs needs to be followed by a nop, as the nop | |
8828 | will be replaced with an instruction to restore the TOC | |
8829 | base pointer. */ | |
b25116a9 | 8830 | stub_entry = NULL; |
8387904d | 8831 | fdh = h; |
ad8e1ba5 | 8832 | if (((h != NULL |
039b3fef AM |
8833 | && (((fdh = h->oh) != NULL |
8834 | && fdh->elf.plt.plist != NULL) | |
8835 | || (fdh = h)->elf.plt.plist != NULL)) | |
8387904d | 8836 | || (sec != NULL |
ad8e1ba5 | 8837 | && sec->output_section != NULL |
b25116a9 | 8838 | && sec->id <= htab->top_id |
ad8e1ba5 AM |
8839 | && (htab->stub_group[sec->id].toc_off |
8840 | != htab->stub_group[input_section->id].toc_off))) | |
721956f4 | 8841 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
ad8e1ba5 AM |
8842 | rel, htab)) != NULL |
8843 | && (stub_entry->stub_type == ppc_stub_plt_call | |
8844 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
8845 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
41bd81ab | 8846 | { |
b25116a9 | 8847 | bfd_boolean can_plt_call = FALSE; |
721956f4 | 8848 | |
eea6121a | 8849 | if (rel->r_offset + 8 <= input_section->size) |
41bd81ab | 8850 | { |
b25116a9 AM |
8851 | unsigned long nop; |
8852 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
8853 | if (nop == NOP | |
8854 | || nop == CROR_151515 || nop == CROR_313131) | |
41bd81ab | 8855 | { |
4ce794b7 | 8856 | bfd_put_32 (input_bfd, LD_R2_40R1, |
411e1bfb | 8857 | contents + rel->r_offset + 4); |
b25116a9 | 8858 | can_plt_call = TRUE; |
41bd81ab | 8859 | } |
5bd4f169 | 8860 | } |
721956f4 AM |
8861 | |
8862 | if (!can_plt_call) | |
8863 | { | |
ad8e1ba5 AM |
8864 | if (stub_entry->stub_type == ppc_stub_plt_call) |
8865 | { | |
8866 | /* If this is a plain branch rather than a branch | |
8867 | and link, don't require a nop. */ | |
b25116a9 AM |
8868 | unsigned long br; |
8869 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
8870 | if ((br & 1) == 0) | |
8871 | can_plt_call = TRUE; | |
ad8e1ba5 | 8872 | } |
6ab189d5 | 8873 | else if (h != NULL |
039b3fef | 8874 | && strcmp (h->elf.root.root.string, |
6ab189d5 AM |
8875 | ".__libc_start_main") == 0) |
8876 | { | |
8877 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
b25116a9 | 8878 | can_plt_call = TRUE; |
6ab189d5 | 8879 | } |
ad8e1ba5 AM |
8880 | else |
8881 | { | |
8882 | if (strcmp (input_section->output_section->name, | |
8883 | ".init") == 0 | |
8884 | || strcmp (input_section->output_section->name, | |
8885 | ".fini") == 0) | |
8886 | (*_bfd_error_handler) | |
d003868e | 8887 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
ad8e1ba5 AM |
8888 | "not supported using your crt files; " |
8889 | "recompile with -mminimal-toc or upgrade gcc"), | |
d003868e AM |
8890 | input_bfd, |
8891 | input_section, | |
ad8e1ba5 AM |
8892 | (long) rel->r_offset); |
8893 | else | |
8894 | (*_bfd_error_handler) | |
d003868e | 8895 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
ad8e1ba5 AM |
8896 | "does not allow automatic multiple TOCs; " |
8897 | "recompile with -mminimal-toc or " | |
8898 | "-fno-optimize-sibling-calls, " | |
8899 | "or make `%s' extern"), | |
d003868e AM |
8900 | input_bfd, |
8901 | input_section, | |
ad8e1ba5 AM |
8902 | (long) rel->r_offset, |
8903 | sym_name, | |
8904 | sym_name); | |
8905 | bfd_set_error (bfd_error_bad_value); | |
8906 | ret = FALSE; | |
8907 | } | |
721956f4 AM |
8908 | } |
8909 | ||
b25116a9 AM |
8910 | if (can_plt_call |
8911 | && stub_entry->stub_type == ppc_stub_plt_call) | |
8912 | unresolved_reloc = FALSE; | |
8913 | } | |
8914 | ||
8387904d AM |
8915 | if (stub_entry == NULL |
8916 | && get_opd_info (sec) != NULL) | |
8917 | { | |
8918 | /* The branch destination is the value of the opd entry. */ | |
8919 | bfd_vma off = (relocation - sec->output_section->vma | |
8920 | - sec->output_offset + rel->r_addend); | |
8921 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); | |
8922 | if (dest != (bfd_vma) -1) | |
8923 | { | |
8924 | relocation = dest; | |
8925 | addend = 0; | |
8926 | } | |
8927 | } | |
8928 | ||
b25116a9 AM |
8929 | /* If the branch is out of reach we ought to have a long |
8930 | branch stub. */ | |
8931 | from = (rel->r_offset | |
8932 | + input_section->output_offset | |
8933 | + input_section->output_section->vma); | |
8934 | ||
8935 | if (stub_entry == NULL | |
8936 | && (relocation + rel->r_addend - from + max_br_offset | |
8937 | >= 2 * max_br_offset) | |
8938 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
8939 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
039b3fef AM |
8940 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
8941 | htab); | |
b25116a9 AM |
8942 | |
8943 | if (stub_entry != NULL) | |
8944 | { | |
8945 | /* Munge up the value and addend so that we call the stub | |
8946 | rather than the procedure directly. */ | |
8947 | relocation = (stub_entry->stub_offset | |
8948 | + stub_entry->stub_sec->output_offset | |
8949 | + stub_entry->stub_sec->output_section->vma); | |
8950 | addend = 0; | |
8951 | } | |
8952 | ||
8953 | if (insn != 0) | |
8954 | { | |
8955 | if (is_power4) | |
721956f4 | 8956 | { |
b25116a9 AM |
8957 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
8958 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
8959 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
8960 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
8961 | insn |= 0x02 << 21; | |
8962 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
8963 | insn |= 0x08 << 21; | |
8964 | else | |
8965 | break; | |
8966 | } | |
8967 | else | |
8968 | { | |
8969 | /* Invert 'y' bit if not the default. */ | |
8970 | if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0) | |
8971 | insn ^= 0x01 << 21; | |
721956f4 | 8972 | } |
b25116a9 AM |
8973 | |
8974 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
5bd4f169 | 8975 | } |
e86ce104 | 8976 | |
06da1e8e AM |
8977 | /* NOP out calls to undefined weak functions. |
8978 | We can thus call a weak function without first | |
8979 | checking whether the function is defined. */ | |
b25116a9 | 8980 | else if (h != NULL |
039b3fef | 8981 | && h->elf.root.type == bfd_link_hash_undefweak |
b25116a9 AM |
8982 | && r_type == R_PPC64_REL24 |
8983 | && relocation == 0 | |
8984 | && rel->r_addend == 0) | |
e86ce104 | 8985 | { |
06da1e8e AM |
8986 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
8987 | continue; | |
e86ce104 | 8988 | } |
65f38f15 AM |
8989 | break; |
8990 | } | |
5bd4f169 | 8991 | |
65f38f15 | 8992 | /* Set `addend'. */ |
411e1bfb | 8993 | tls_type = 0; |
65f38f15 AM |
8994 | switch (r_type) |
8995 | { | |
8996 | default: | |
8997 | (*_bfd_error_handler) | |
d003868e AM |
8998 | (_("%B: unknown relocation type %d for symbol %s"), |
8999 | input_bfd, (int) r_type, sym_name); | |
5bd4f169 | 9000 | |
65f38f15 | 9001 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 9002 | ret = FALSE; |
65f38f15 | 9003 | continue; |
5bd4f169 | 9004 | |
65f38f15 | 9005 | case R_PPC64_NONE: |
411e1bfb | 9006 | case R_PPC64_TLS: |
04c9666a AM |
9007 | case R_PPC64_GNU_VTINHERIT: |
9008 | case R_PPC64_GNU_VTENTRY: | |
65f38f15 | 9009 | continue; |
5bd4f169 AM |
9010 | |
9011 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
9012 | address in the GOT as relocation value instead of the | |
411e1bfb | 9013 | symbol's value itself. Also, create a GOT entry for the |
5bd4f169 | 9014 | symbol and put the symbol value there. */ |
411e1bfb AM |
9015 | case R_PPC64_GOT_TLSGD16: |
9016 | case R_PPC64_GOT_TLSGD16_LO: | |
9017 | case R_PPC64_GOT_TLSGD16_HI: | |
9018 | case R_PPC64_GOT_TLSGD16_HA: | |
951fd09b | 9019 | tls_type = TLS_TLS | TLS_GD; |
411e1bfb AM |
9020 | goto dogot; |
9021 | ||
9022 | case R_PPC64_GOT_TLSLD16: | |
9023 | case R_PPC64_GOT_TLSLD16_LO: | |
9024 | case R_PPC64_GOT_TLSLD16_HI: | |
9025 | case R_PPC64_GOT_TLSLD16_HA: | |
951fd09b | 9026 | tls_type = TLS_TLS | TLS_LD; |
411e1bfb AM |
9027 | goto dogot; |
9028 | ||
9029 | case R_PPC64_GOT_TPREL16_DS: | |
9030 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9031 | case R_PPC64_GOT_TPREL16_HI: | |
9032 | case R_PPC64_GOT_TPREL16_HA: | |
9033 | tls_type = TLS_TLS | TLS_TPREL; | |
9034 | goto dogot; | |
9035 | ||
9036 | case R_PPC64_GOT_DTPREL16_DS: | |
9037 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9038 | case R_PPC64_GOT_DTPREL16_HI: | |
9039 | case R_PPC64_GOT_DTPREL16_HA: | |
9040 | tls_type = TLS_TLS | TLS_DTPREL; | |
9041 | goto dogot; | |
9042 | ||
65f38f15 AM |
9043 | case R_PPC64_GOT16: |
9044 | case R_PPC64_GOT16_LO: | |
9045 | case R_PPC64_GOT16_HI: | |
9046 | case R_PPC64_GOT16_HA: | |
9047 | case R_PPC64_GOT16_DS: | |
9048 | case R_PPC64_GOT16_LO_DS: | |
411e1bfb | 9049 | dogot: |
5bd4f169 AM |
9050 | { |
9051 | /* Relocation is to the entry for this symbol in the global | |
9052 | offset table. */ | |
e717da7e | 9053 | asection *got; |
d881513a | 9054 | bfd_vma *offp; |
5bd4f169 | 9055 | bfd_vma off; |
d881513a | 9056 | unsigned long indx = 0; |
65f38f15 | 9057 | |
d881513a AM |
9058 | if (tls_type == (TLS_TLS | TLS_LD) |
9059 | && (h == NULL | |
039b3fef AM |
9060 | || (h->elf.elf_link_hash_flags |
9061 | & ELF_LINK_HASH_DEF_DYNAMIC) == 0)) | |
e717da7e | 9062 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
411e1bfb | 9063 | else |
5bd4f169 | 9064 | { |
d881513a | 9065 | struct got_entry *ent; |
5bd4f169 | 9066 | |
d881513a AM |
9067 | if (h != NULL) |
9068 | { | |
9069 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
039b3fef AM |
9070 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
9071 | &h->elf) | |
d881513a | 9072 | || (info->shared |
039b3fef | 9073 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
d881513a AM |
9074 | /* This is actually a static link, or it is a |
9075 | -Bsymbolic link and the symbol is defined | |
9076 | locally, or the symbol was forced to be local | |
9077 | because of a version file. */ | |
9078 | ; | |
9079 | else | |
9080 | { | |
039b3fef | 9081 | indx = h->elf.dynindx; |
d881513a AM |
9082 | unresolved_reloc = FALSE; |
9083 | } | |
039b3fef | 9084 | ent = h->elf.got.glist; |
d881513a | 9085 | } |
411e1bfb | 9086 | else |
5bd4f169 | 9087 | { |
d881513a AM |
9088 | if (local_got_ents == NULL) |
9089 | abort (); | |
9090 | ent = local_got_ents[r_symndx]; | |
5bd4f169 | 9091 | } |
d881513a AM |
9092 | |
9093 | for (; ent != NULL; ent = ent->next) | |
9094 | if (ent->addend == rel->r_addend | |
e717da7e | 9095 | && ent->owner == input_bfd |
d881513a AM |
9096 | && ent->tls_type == tls_type) |
9097 | break; | |
9098 | if (ent == NULL) | |
9099 | abort (); | |
9100 | offp = &ent->got.offset; | |
5bd4f169 | 9101 | } |
411e1bfb | 9102 | |
e717da7e AM |
9103 | got = ppc64_elf_tdata (input_bfd)->got; |
9104 | if (got == NULL) | |
9105 | abort (); | |
9106 | ||
411e1bfb AM |
9107 | /* The offset must always be a multiple of 8. We use the |
9108 | least significant bit to record whether we have already | |
9109 | processed this entry. */ | |
d881513a | 9110 | off = *offp; |
411e1bfb AM |
9111 | if ((off & 1) != 0) |
9112 | off &= ~1; | |
5bd4f169 AM |
9113 | else |
9114 | { | |
411e1bfb AM |
9115 | /* Generate relocs for the dynamic linker, except in |
9116 | the case of TLSLD where we'll use one entry per | |
9117 | module. */ | |
e717da7e AM |
9118 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
9119 | ||
d881513a | 9120 | *offp = off | 1; |
4e795f50 AM |
9121 | if ((info->shared || indx != 0) |
9122 | && (h == NULL | |
039b3fef AM |
9123 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
9124 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
5bd4f169 | 9125 | { |
e717da7e AM |
9126 | outrel.r_offset = (got->output_section->vma |
9127 | + got->output_offset | |
411e1bfb | 9128 | + off); |
81407a69 | 9129 | outrel.r_addend = rel->r_addend; |
d881513a | 9130 | if (tls_type & (TLS_LD | TLS_GD)) |
5bd4f169 | 9131 | { |
411e1bfb | 9132 | outrel.r_addend = 0; |
e515b051 | 9133 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
d881513a AM |
9134 | if (tls_type == (TLS_TLS | TLS_GD)) |
9135 | { | |
e717da7e AM |
9136 | loc = relgot->contents; |
9137 | loc += (relgot->reloc_count++ | |
d881513a AM |
9138 | * sizeof (Elf64_External_Rela)); |
9139 | bfd_elf64_swap_reloca_out (output_bfd, | |
9140 | &outrel, loc); | |
e515b051 | 9141 | outrel.r_offset += 8; |
81407a69 | 9142 | outrel.r_addend = rel->r_addend; |
d881513a AM |
9143 | outrel.r_info |
9144 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
d881513a | 9145 | } |
411e1bfb | 9146 | } |
951fd09b | 9147 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
411e1bfb | 9148 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
951fd09b | 9149 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb AM |
9150 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
9151 | else if (indx == 0) | |
81407a69 AM |
9152 | { |
9153 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
9154 | ||
9155 | /* Write the .got section contents for the sake | |
9156 | of prelink. */ | |
e717da7e | 9157 | loc = got->contents + off; |
23fbd6fa JJ |
9158 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
9159 | loc); | |
81407a69 | 9160 | } |
411e1bfb AM |
9161 | else |
9162 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
81407a69 AM |
9163 | |
9164 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
e515b051 AM |
9165 | { |
9166 | outrel.r_addend += relocation; | |
9167 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
e1918d23 | 9168 | outrel.r_addend -= htab->elf.tls_sec->vma; |
e515b051 | 9169 | } |
e717da7e AM |
9170 | loc = relgot->contents; |
9171 | loc += (relgot->reloc_count++ | |
411e1bfb AM |
9172 | * sizeof (Elf64_External_Rela)); |
9173 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
9174 | } | |
9175 | ||
ad8e1ba5 | 9176 | /* Init the .got section contents here if we're not |
81407a69 | 9177 | emitting a reloc. */ |
d881513a | 9178 | else |
411e1bfb | 9179 | { |
d881513a | 9180 | relocation += rel->r_addend; |
7b609f53 AM |
9181 | if (tls_type == (TLS_TLS | TLS_LD)) |
9182 | relocation = 1; | |
9183 | else if (tls_type != 0) | |
411e1bfb | 9184 | { |
e1918d23 | 9185 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
7b609f53 | 9186 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
411e1bfb | 9187 | relocation += DTP_OFFSET - TP_OFFSET; |
5bd4f169 | 9188 | |
7b609f53 AM |
9189 | if (tls_type == (TLS_TLS | TLS_GD)) |
9190 | { | |
9191 | bfd_put_64 (output_bfd, relocation, | |
e717da7e | 9192 | got->contents + off + 8); |
7b609f53 AM |
9193 | relocation = 1; |
9194 | } | |
411e1bfb | 9195 | } |
7b609f53 | 9196 | |
411e1bfb | 9197 | bfd_put_64 (output_bfd, relocation, |
e717da7e | 9198 | got->contents + off); |
5bd4f169 AM |
9199 | } |
9200 | } | |
9201 | ||
65f38f15 AM |
9202 | if (off >= (bfd_vma) -2) |
9203 | abort (); | |
9204 | ||
e717da7e | 9205 | relocation = got->output_offset + off; |
65f38f15 | 9206 | |
5bd4f169 | 9207 | /* TOC base (r2) is TOC start plus 0x8000. */ |
e717da7e | 9208 | addend = -TOC_BASE_OFF; |
5bd4f169 | 9209 | } |
65f38f15 AM |
9210 | break; |
9211 | ||
9212 | case R_PPC64_PLT16_HA: | |
9213 | case R_PPC64_PLT16_HI: | |
9214 | case R_PPC64_PLT16_LO: | |
9215 | case R_PPC64_PLT32: | |
9216 | case R_PPC64_PLT64: | |
9217 | /* Relocation is to the entry for this symbol in the | |
9218 | procedure linkage table. */ | |
9219 | ||
9220 | /* Resolve a PLT reloc against a local symbol directly, | |
9221 | without using the procedure linkage table. */ | |
9222 | if (h == NULL) | |
9223 | break; | |
9224 | ||
411e1bfb AM |
9225 | /* It's possible that we didn't make a PLT entry for this |
9226 | symbol. This happens when statically linking PIC code, | |
9227 | or when using -Bsymbolic. Go find a match if there is a | |
9228 | PLT entry. */ | |
4ce794b7 | 9229 | if (htab->plt != NULL) |
65f38f15 | 9230 | { |
411e1bfb | 9231 | struct plt_entry *ent; |
039b3fef | 9232 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
411e1bfb AM |
9233 | if (ent->addend == rel->r_addend |
9234 | && ent->plt.offset != (bfd_vma) -1) | |
9235 | { | |
4ce794b7 AM |
9236 | relocation = (htab->plt->output_section->vma |
9237 | + htab->plt->output_offset | |
411e1bfb AM |
9238 | + ent->plt.offset); |
9239 | unresolved_reloc = FALSE; | |
9240 | } | |
65f38f15 | 9241 | } |
65f38f15 | 9242 | break; |
5bd4f169 | 9243 | |
0b13192e AM |
9244 | case R_PPC64_TOC: |
9245 | /* Relocation value is TOC base. */ | |
9246 | relocation = TOCstart; | |
9247 | if (r_symndx == 0) | |
9248 | relocation += htab->stub_group[input_section->id].toc_off; | |
8517fae7 AM |
9249 | else if (unresolved_reloc) |
9250 | ; | |
9251 | else if (sec != NULL && sec->id <= htab->top_id) | |
0b13192e AM |
9252 | relocation += htab->stub_group[sec->id].toc_off; |
9253 | else | |
9254 | unresolved_reloc = TRUE; | |
9255 | goto dodyn2; | |
9256 | ||
5bd4f169 AM |
9257 | /* TOC16 relocs. We want the offset relative to the TOC base, |
9258 | which is the address of the start of the TOC plus 0x8000. | |
9259 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
9260 | in this order. */ | |
65f38f15 AM |
9261 | case R_PPC64_TOC16: |
9262 | case R_PPC64_TOC16_LO: | |
9263 | case R_PPC64_TOC16_HI: | |
9264 | case R_PPC64_TOC16_DS: | |
9265 | case R_PPC64_TOC16_LO_DS: | |
9266 | case R_PPC64_TOC16_HA: | |
ad8e1ba5 | 9267 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
5bd4f169 AM |
9268 | break; |
9269 | ||
9270 | /* Relocate against the beginning of the section. */ | |
65f38f15 AM |
9271 | case R_PPC64_SECTOFF: |
9272 | case R_PPC64_SECTOFF_LO: | |
9273 | case R_PPC64_SECTOFF_HI: | |
9274 | case R_PPC64_SECTOFF_DS: | |
9275 | case R_PPC64_SECTOFF_LO_DS: | |
9276 | case R_PPC64_SECTOFF_HA: | |
4ce794b7 | 9277 | if (sec != NULL) |
65f38f15 | 9278 | addend -= sec->output_section->vma; |
5bd4f169 AM |
9279 | break; |
9280 | ||
721956f4 AM |
9281 | case R_PPC64_REL14: |
9282 | case R_PPC64_REL14_BRNTAKEN: | |
9283 | case R_PPC64_REL14_BRTAKEN: | |
5d1634d7 AM |
9284 | case R_PPC64_REL24: |
9285 | break; | |
9286 | ||
411e1bfb AM |
9287 | case R_PPC64_TPREL16: |
9288 | case R_PPC64_TPREL16_LO: | |
9289 | case R_PPC64_TPREL16_HI: | |
9290 | case R_PPC64_TPREL16_HA: | |
9291 | case R_PPC64_TPREL16_DS: | |
9292 | case R_PPC64_TPREL16_LO_DS: | |
9293 | case R_PPC64_TPREL16_HIGHER: | |
9294 | case R_PPC64_TPREL16_HIGHERA: | |
9295 | case R_PPC64_TPREL16_HIGHEST: | |
9296 | case R_PPC64_TPREL16_HIGHESTA: | |
e1918d23 | 9297 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
9298 | if (info->shared) |
9299 | /* The TPREL16 relocs shouldn't really be used in shared | |
9300 | libs as they will result in DT_TEXTREL being set, but | |
9301 | support them anyway. */ | |
9302 | goto dodyn; | |
9303 | break; | |
9304 | ||
9305 | case R_PPC64_DTPREL16: | |
9306 | case R_PPC64_DTPREL16_LO: | |
9307 | case R_PPC64_DTPREL16_HI: | |
9308 | case R_PPC64_DTPREL16_HA: | |
9309 | case R_PPC64_DTPREL16_DS: | |
9310 | case R_PPC64_DTPREL16_LO_DS: | |
9311 | case R_PPC64_DTPREL16_HIGHER: | |
9312 | case R_PPC64_DTPREL16_HIGHERA: | |
9313 | case R_PPC64_DTPREL16_HIGHEST: | |
9314 | case R_PPC64_DTPREL16_HIGHESTA: | |
e1918d23 | 9315 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
9316 | break; |
9317 | ||
e515b051 AM |
9318 | case R_PPC64_DTPMOD64: |
9319 | relocation = 1; | |
9320 | addend = 0; | |
9321 | goto dodyn; | |
9322 | ||
411e1bfb | 9323 | case R_PPC64_TPREL64: |
e1918d23 | 9324 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
411e1bfb AM |
9325 | goto dodyn; |
9326 | ||
9327 | case R_PPC64_DTPREL64: | |
e1918d23 | 9328 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
411e1bfb AM |
9329 | /* Fall thru */ |
9330 | ||
65f38f15 AM |
9331 | /* Relocations that may need to be propagated if this is a |
9332 | dynamic object. */ | |
04c9666a | 9333 | case R_PPC64_REL30: |
65f38f15 AM |
9334 | case R_PPC64_REL32: |
9335 | case R_PPC64_REL64: | |
9336 | case R_PPC64_ADDR14: | |
9337 | case R_PPC64_ADDR14_BRNTAKEN: | |
9338 | case R_PPC64_ADDR14_BRTAKEN: | |
9339 | case R_PPC64_ADDR16: | |
9340 | case R_PPC64_ADDR16_DS: | |
9341 | case R_PPC64_ADDR16_HA: | |
9342 | case R_PPC64_ADDR16_HI: | |
9343 | case R_PPC64_ADDR16_HIGHER: | |
9344 | case R_PPC64_ADDR16_HIGHERA: | |
9345 | case R_PPC64_ADDR16_HIGHEST: | |
9346 | case R_PPC64_ADDR16_HIGHESTA: | |
9347 | case R_PPC64_ADDR16_LO: | |
9348 | case R_PPC64_ADDR16_LO_DS: | |
9349 | case R_PPC64_ADDR24: | |
65f38f15 AM |
9350 | case R_PPC64_ADDR32: |
9351 | case R_PPC64_ADDR64: | |
9352 | case R_PPC64_UADDR16: | |
9353 | case R_PPC64_UADDR32: | |
9354 | case R_PPC64_UADDR64: | |
ec338859 AM |
9355 | /* r_symndx will be zero only for relocs against symbols |
9356 | from removed linkonce sections, or sections discarded by | |
9357 | a linker script. */ | |
411e1bfb | 9358 | dodyn: |
5d1634d7 AM |
9359 | if (r_symndx == 0) |
9360 | break; | |
9361 | /* Fall thru. */ | |
9362 | ||
0b13192e | 9363 | dodyn2: |
5d1634d7 | 9364 | if ((input_section->flags & SEC_ALLOC) == 0) |
ec338859 AM |
9365 | break; |
9366 | ||
41bd81ab AM |
9367 | if (NO_OPD_RELOCS && is_opd) |
9368 | break; | |
9369 | ||
65f38f15 | 9370 | if ((info->shared |
4e795f50 | 9371 | && (h == NULL |
039b3fef AM |
9372 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
9373 | || h->elf.root.type != bfd_link_hash_undefweak) | |
411e1bfb | 9374 | && (MUST_BE_DYN_RELOC (r_type) |
039b3fef | 9375 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
f4656909 AM |
9376 | || (ELIMINATE_COPY_RELOCS |
9377 | && !info->shared | |
65f38f15 | 9378 | && h != NULL |
039b3fef AM |
9379 | && h->elf.dynindx != -1 |
9380 | && !(h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) | |
9381 | && (h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) | |
9382 | && !(h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) | |
65f38f15 AM |
9383 | { |
9384 | Elf_Internal_Rela outrel; | |
b34976b6 | 9385 | bfd_boolean skip, relocate; |
65f38f15 | 9386 | asection *sreloc; |
947216bf | 9387 | bfd_byte *loc; |
1cf1f670 | 9388 | bfd_vma out_off; |
65f38f15 AM |
9389 | |
9390 | /* When generating a dynamic object, these relocations | |
9391 | are copied into the output file to be resolved at run | |
9392 | time. */ | |
9393 | ||
b34976b6 AM |
9394 | skip = FALSE; |
9395 | relocate = FALSE; | |
65f38f15 | 9396 | |
1cf1f670 AM |
9397 | out_off = _bfd_elf_section_offset (output_bfd, info, |
9398 | input_section, rel->r_offset); | |
9399 | if (out_off == (bfd_vma) -1) | |
b34976b6 | 9400 | skip = TRUE; |
1cf1f670 | 9401 | else if (out_off == (bfd_vma) -2) |
b34976b6 | 9402 | skip = TRUE, relocate = TRUE; |
1cf1f670 AM |
9403 | out_off += (input_section->output_section->vma |
9404 | + input_section->output_offset); | |
9405 | outrel.r_offset = out_off; | |
411e1bfb | 9406 | outrel.r_addend = rel->r_addend; |
65f38f15 | 9407 | |
1cf1f670 AM |
9408 | /* Optimize unaligned reloc use. */ |
9409 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
9410 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
9411 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
9412 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
9413 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
9414 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
9415 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
9416 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
9417 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
9418 | ||
65f38f15 | 9419 | if (skip) |
0bb2d96a | 9420 | memset (&outrel, 0, sizeof outrel); |
039b3fef | 9421 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
0b13192e AM |
9422 | && !is_opd |
9423 | && r_type != R_PPC64_TOC) | |
039b3fef | 9424 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
65f38f15 AM |
9425 | else |
9426 | { | |
41bd81ab AM |
9427 | /* This symbol is local, or marked to become local, |
9428 | or this is an opd section reloc which must point | |
9429 | at a local function. */ | |
65f38f15 | 9430 | outrel.r_addend += relocation; |
e86ce104 | 9431 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
65f38f15 | 9432 | { |
3fad3c7c | 9433 | if (is_opd && h != NULL) |
afbe61cf AM |
9434 | { |
9435 | /* Lie about opd entries. This case occurs | |
9436 | when building shared libraries and we | |
9437 | reference a function in another shared | |
3fad3c7c AM |
9438 | lib. The same thing happens for a weak |
9439 | definition in an application that's | |
9440 | overridden by a strong definition in a | |
9441 | shared lib. (I believe this is a generic | |
9442 | bug in binutils handling of weak syms.) | |
9443 | In these cases we won't use the opd | |
1e2f5b6e | 9444 | entry in this lib. */ |
b34976b6 | 9445 | unresolved_reloc = FALSE; |
afbe61cf | 9446 | } |
65f38f15 | 9447 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
81407a69 AM |
9448 | |
9449 | /* We need to relocate .opd contents for ld.so. | |
9450 | Prelink also wants simple and consistent rules | |
9451 | for relocs. This make all RELATIVE relocs have | |
9452 | *r_offset equal to r_addend. */ | |
9453 | relocate = TRUE; | |
65f38f15 AM |
9454 | } |
9455 | else | |
9456 | { | |
9457 | long indx = 0; | |
9458 | ||
41bd81ab | 9459 | if (bfd_is_abs_section (sec)) |
65f38f15 AM |
9460 | ; |
9461 | else if (sec == NULL || sec->owner == NULL) | |
9462 | { | |
9463 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 9464 | return FALSE; |
65f38f15 AM |
9465 | } |
9466 | else | |
9467 | { | |
9468 | asection *osec; | |
9469 | ||
9470 | osec = sec->output_section; | |
9471 | indx = elf_section_data (osec)->dynindx; | |
9472 | ||
9473 | /* We are turning this relocation into one | |
9474 | against a section symbol, so subtract out | |
9475 | the output section's address but not the | |
9476 | offset of the input section in the output | |
9477 | section. */ | |
9478 | outrel.r_addend -= osec->vma; | |
9479 | } | |
9480 | ||
9481 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
9482 | } | |
9483 | } | |
9484 | ||
9485 | sreloc = elf_section_data (input_section)->sreloc; | |
9486 | if (sreloc == NULL) | |
9487 | abort (); | |
9488 | ||
947216bf AM |
9489 | loc = sreloc->contents; |
9490 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 AM |
9491 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
9492 | ||
9493 | /* If this reloc is against an external symbol, it will | |
9494 | be computed at runtime, so there's no need to do | |
81407a69 AM |
9495 | anything now. However, for the sake of prelink ensure |
9496 | that the section contents are a known value. */ | |
65f38f15 | 9497 | if (! relocate) |
81407a69 AM |
9498 | { |
9499 | unresolved_reloc = FALSE; | |
9500 | /* The value chosen here is quite arbitrary as ld.so | |
9501 | ignores section contents except for the special | |
9502 | case of .opd where the contents might be accessed | |
9503 | before relocation. Choose zero, as that won't | |
9504 | cause reloc overflow. */ | |
9505 | relocation = 0; | |
9506 | addend = 0; | |
9507 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
9508 | to improve backward compatibility with older | |
9509 | versions of ld. */ | |
9510 | if (r_type == R_PPC64_ADDR64) | |
9511 | addend = outrel.r_addend; | |
9512 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
4ce794b7 | 9513 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
000732f7 AM |
9514 | addend = (input_section->output_section->vma |
9515 | + input_section->output_offset | |
9516 | + rel->r_offset); | |
81407a69 | 9517 | } |
65f38f15 | 9518 | } |
5bd4f169 AM |
9519 | break; |
9520 | ||
65f38f15 AM |
9521 | case R_PPC64_COPY: |
9522 | case R_PPC64_GLOB_DAT: | |
9523 | case R_PPC64_JMP_SLOT: | |
9524 | case R_PPC64_RELATIVE: | |
9525 | /* We shouldn't ever see these dynamic relocs in relocatable | |
9526 | files. */ | |
ae9a127f | 9527 | /* Fall through. */ |
65f38f15 AM |
9528 | |
9529 | case R_PPC64_PLTGOT16: | |
9530 | case R_PPC64_PLTGOT16_DS: | |
9531 | case R_PPC64_PLTGOT16_HA: | |
9532 | case R_PPC64_PLTGOT16_HI: | |
9533 | case R_PPC64_PLTGOT16_LO: | |
9534 | case R_PPC64_PLTGOT16_LO_DS: | |
9535 | case R_PPC64_PLTREL32: | |
9536 | case R_PPC64_PLTREL64: | |
9537 | /* These ones haven't been implemented yet. */ | |
9538 | ||
9539 | (*_bfd_error_handler) | |
d003868e AM |
9540 | (_("%B: relocation %s is not supported for symbol %s."), |
9541 | input_bfd, | |
4ce794b7 | 9542 | ppc64_elf_howto_table[r_type]->name, sym_name); |
5bd4f169 AM |
9543 | |
9544 | bfd_set_error (bfd_error_invalid_operation); | |
b34976b6 | 9545 | ret = FALSE; |
5bd4f169 | 9546 | continue; |
65f38f15 | 9547 | } |
5bd4f169 | 9548 | |
65f38f15 AM |
9549 | /* Do any further special processing. */ |
9550 | switch (r_type) | |
9551 | { | |
9552 | default: | |
9553 | break; | |
9554 | ||
9555 | case R_PPC64_ADDR16_HA: | |
9556 | case R_PPC64_ADDR16_HIGHERA: | |
9557 | case R_PPC64_ADDR16_HIGHESTA: | |
86bbe32f AM |
9558 | case R_PPC64_GOT16_HA: |
9559 | case R_PPC64_PLTGOT16_HA: | |
65f38f15 AM |
9560 | case R_PPC64_PLT16_HA: |
9561 | case R_PPC64_TOC16_HA: | |
9562 | case R_PPC64_SECTOFF_HA: | |
411e1bfb AM |
9563 | case R_PPC64_TPREL16_HA: |
9564 | case R_PPC64_DTPREL16_HA: | |
9565 | case R_PPC64_GOT_TLSGD16_HA: | |
9566 | case R_PPC64_GOT_TLSLD16_HA: | |
9567 | case R_PPC64_GOT_TPREL16_HA: | |
9568 | case R_PPC64_GOT_DTPREL16_HA: | |
9569 | case R_PPC64_TPREL16_HIGHER: | |
9570 | case R_PPC64_TPREL16_HIGHERA: | |
9571 | case R_PPC64_TPREL16_HIGHEST: | |
9572 | case R_PPC64_TPREL16_HIGHESTA: | |
9573 | case R_PPC64_DTPREL16_HIGHER: | |
9574 | case R_PPC64_DTPREL16_HIGHERA: | |
9575 | case R_PPC64_DTPREL16_HIGHEST: | |
9576 | case R_PPC64_DTPREL16_HIGHESTA: | |
65f38f15 AM |
9577 | /* It's just possible that this symbol is a weak symbol |
9578 | that's not actually defined anywhere. In that case, | |
9579 | 'sec' would be NULL, and we should leave the symbol | |
9580 | alone (it will be set to zero elsewhere in the link). */ | |
9581 | if (sec != NULL) | |
e515b051 AM |
9582 | /* Add 0x10000 if sign bit in 0:15 is set. |
9583 | Bits 0:15 are not used. */ | |
9584 | addend += 0x8000; | |
65f38f15 AM |
9585 | break; |
9586 | ||
9587 | case R_PPC64_ADDR16_DS: | |
9588 | case R_PPC64_ADDR16_LO_DS: | |
9589 | case R_PPC64_GOT16_DS: | |
9590 | case R_PPC64_GOT16_LO_DS: | |
9591 | case R_PPC64_PLT16_LO_DS: | |
9592 | case R_PPC64_SECTOFF_DS: | |
9593 | case R_PPC64_SECTOFF_LO_DS: | |
9594 | case R_PPC64_TOC16_DS: | |
9595 | case R_PPC64_TOC16_LO_DS: | |
9596 | case R_PPC64_PLTGOT16_DS: | |
9597 | case R_PPC64_PLTGOT16_LO_DS: | |
411e1bfb AM |
9598 | case R_PPC64_GOT_TPREL16_DS: |
9599 | case R_PPC64_GOT_TPREL16_LO_DS: | |
9600 | case R_PPC64_GOT_DTPREL16_DS: | |
9601 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
9602 | case R_PPC64_TPREL16_DS: | |
9603 | case R_PPC64_TPREL16_LO_DS: | |
9604 | case R_PPC64_DTPREL16_DS: | |
9605 | case R_PPC64_DTPREL16_LO_DS: | |
adadcc0c AM |
9606 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
9607 | mask = 3; | |
9608 | /* If this reloc is against an lq insn, then the value must be | |
9609 | a multiple of 16. This is somewhat of a hack, but the | |
9610 | "correct" way to do this by defining _DQ forms of all the | |
9611 | _DS relocs bloats all reloc switches in this file. It | |
9612 | doesn't seem to make much sense to use any of these relocs | |
9613 | in data, so testing the insn should be safe. */ | |
494dac0c | 9614 | if ((insn & (0x3f << 26)) == (56u << 26)) |
adadcc0c AM |
9615 | mask = 15; |
9616 | if (((relocation + addend) & mask) != 0) | |
65f38f15 AM |
9617 | { |
9618 | (*_bfd_error_handler) | |
d003868e AM |
9619 | (_("%B: error: relocation %s not a multiple of %d"), |
9620 | input_bfd, | |
4ce794b7 | 9621 | ppc64_elf_howto_table[r_type]->name, |
adadcc0c | 9622 | mask + 1); |
65f38f15 | 9623 | bfd_set_error (bfd_error_bad_value); |
b34976b6 | 9624 | ret = FALSE; |
65f38f15 AM |
9625 | continue; |
9626 | } | |
9627 | break; | |
5bd4f169 AM |
9628 | } |
9629 | ||
239e1f3a AM |
9630 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
9631 | because such sections are not SEC_ALLOC and thus ld.so will | |
9632 | not process them. */ | |
65f38f15 | 9633 | if (unresolved_reloc |
239e1f3a | 9634 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
039b3fef | 9635 | && (h->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC))) |
9c07fe7c AM |
9636 | { |
9637 | (*_bfd_error_handler) | |
d003868e AM |
9638 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
9639 | input_bfd, | |
9640 | input_section, | |
9c07fe7c | 9641 | (long) rel->r_offset, |
7b609f53 | 9642 | ppc64_elf_howto_table[(int) r_type]->name, |
039b3fef | 9643 | h->elf.root.root.string); |
b34976b6 | 9644 | ret = FALSE; |
9c07fe7c | 9645 | } |
5bd4f169 | 9646 | |
65f38f15 | 9647 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
5bd4f169 AM |
9648 | input_bfd, |
9649 | input_section, | |
9650 | contents, | |
411e1bfb | 9651 | rel->r_offset, |
5bd4f169 AM |
9652 | relocation, |
9653 | addend); | |
9654 | ||
ef60b7ff | 9655 | if (r != bfd_reloc_ok) |
5bd4f169 | 9656 | { |
cd27b276 AM |
9657 | if (sym_name == NULL) |
9658 | sym_name = "(null)"; | |
9659 | if (r == bfd_reloc_overflow) | |
5bd4f169 | 9660 | { |
cd27b276 AM |
9661 | if (warned) |
9662 | continue; | |
9663 | if (h != NULL | |
039b3fef | 9664 | && h->elf.root.type == bfd_link_hash_undefweak |
4ce794b7 | 9665 | && ppc64_elf_howto_table[r_type]->pc_relative) |
5bd4f169 AM |
9666 | { |
9667 | /* Assume this is a call protected by other code that | |
9668 | detects the symbol is undefined. If this is the case, | |
9669 | we can safely ignore the overflow. If not, the | |
9670 | program is hosed anyway, and a little warning isn't | |
9671 | going to help. */ | |
9672 | ||
9673 | continue; | |
9674 | } | |
9675 | ||
ef60b7ff | 9676 | if (!((*info->callbacks->reloc_overflow) |
4ce794b7 | 9677 | (info, sym_name, ppc64_elf_howto_table[r_type]->name, |
411e1bfb | 9678 | rel->r_addend, input_bfd, input_section, rel->r_offset))) |
b34976b6 | 9679 | return FALSE; |
ef60b7ff AM |
9680 | } |
9681 | else | |
9682 | { | |
9683 | (*_bfd_error_handler) | |
d003868e AM |
9684 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
9685 | input_bfd, | |
9686 | input_section, | |
7b609f53 | 9687 | (long) rel->r_offset, |
4ce794b7 | 9688 | ppc64_elf_howto_table[r_type]->name, |
7b609f53 AM |
9689 | sym_name, |
9690 | (int) r); | |
b34976b6 | 9691 | ret = FALSE; |
ef60b7ff | 9692 | } |
5bd4f169 | 9693 | } |
5bd4f169 AM |
9694 | } |
9695 | ||
5bd4f169 AM |
9696 | return ret; |
9697 | } | |
9698 | ||
754021d0 AM |
9699 | /* Adjust the value of any local symbols in opd sections. */ |
9700 | ||
9701 | static bfd_boolean | |
9702 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, | |
9703 | const char *name ATTRIBUTE_UNUSED, | |
9704 | Elf_Internal_Sym *elfsym, | |
9705 | asection *input_sec, | |
9706 | struct elf_link_hash_entry *h) | |
9707 | { | |
4025353c | 9708 | long *opd_adjust, adjust; |
754021d0 AM |
9709 | bfd_vma value; |
9710 | ||
4025353c AM |
9711 | if (h != NULL) |
9712 | return TRUE; | |
9713 | ||
9714 | opd_adjust = get_opd_info (input_sec); | |
9715 | if (opd_adjust == NULL) | |
754021d0 AM |
9716 | return TRUE; |
9717 | ||
9718 | value = elfsym->st_value - input_sec->output_offset; | |
9719 | if (!info->relocatable) | |
9720 | value -= input_sec->output_section->vma; | |
9721 | ||
3f764659 | 9722 | adjust = opd_adjust[value / 8]; |
4025353c AM |
9723 | if (adjust == -1) |
9724 | elfsym->st_value = 0; | |
9725 | else | |
9726 | elfsym->st_value += adjust; | |
754021d0 AM |
9727 | return TRUE; |
9728 | } | |
9729 | ||
5bd4f169 AM |
9730 | /* Finish up dynamic symbol handling. We set the contents of various |
9731 | dynamic sections here. */ | |
9732 | ||
b34976b6 | 9733 | static bfd_boolean |
4ce794b7 AM |
9734 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
9735 | struct bfd_link_info *info, | |
9736 | struct elf_link_hash_entry *h, | |
9737 | Elf_Internal_Sym *sym) | |
5bd4f169 | 9738 | { |
65f38f15 | 9739 | struct ppc_link_hash_table *htab; |
5bd4f169 | 9740 | bfd *dynobj; |
8387904d AM |
9741 | struct plt_entry *ent; |
9742 | Elf_Internal_Rela rela; | |
9743 | bfd_byte *loc; | |
5bd4f169 | 9744 | |
65f38f15 AM |
9745 | htab = ppc_hash_table (info); |
9746 | dynobj = htab->elf.dynobj; | |
5bd4f169 | 9747 | |
8387904d AM |
9748 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
9749 | if (ent->plt.offset != (bfd_vma) -1) | |
9750 | { | |
9751 | /* This symbol has an entry in the procedure linkage | |
9752 | table. Set it up. */ | |
9753 | ||
9754 | if (htab->plt == NULL | |
9755 | || htab->relplt == NULL | |
9756 | || htab->glink == NULL) | |
9757 | abort (); | |
9758 | ||
9759 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
9760 | fill in the PLT entry. */ | |
9761 | rela.r_offset = (htab->plt->output_section->vma | |
9762 | + htab->plt->output_offset | |
9763 | + ent->plt.offset); | |
9764 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
9765 | rela.r_addend = ent->addend; | |
9766 | ||
9767 | loc = htab->relplt->contents; | |
9768 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
9769 | * sizeof (Elf64_External_Rela)); | |
9770 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
9771 | } | |
5bd4f169 AM |
9772 | |
9773 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) | |
9774 | { | |
5bd4f169 | 9775 | Elf_Internal_Rela rela; |
947216bf | 9776 | bfd_byte *loc; |
5bd4f169 | 9777 | |
65f38f15 | 9778 | /* This symbol needs a copy reloc. Set it up. */ |
5bd4f169 | 9779 | |
65f38f15 AM |
9780 | if (h->dynindx == -1 |
9781 | || (h->root.type != bfd_link_hash_defined | |
9782 | && h->root.type != bfd_link_hash_defweak) | |
4ce794b7 | 9783 | || htab->relbss == NULL) |
65f38f15 | 9784 | abort (); |
5bd4f169 AM |
9785 | |
9786 | rela.r_offset = (h->root.u.def.value | |
9787 | + h->root.u.def.section->output_section->vma | |
9788 | + h->root.u.def.section->output_offset); | |
9789 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
9790 | rela.r_addend = 0; | |
4ce794b7 AM |
9791 | loc = htab->relbss->contents; |
9792 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
65f38f15 | 9793 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
5bd4f169 AM |
9794 | } |
9795 | ||
5bd4f169 AM |
9796 | /* Mark some specially defined symbols as absolute. */ |
9797 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
9798 | sym->st_shndx = SHN_ABS; | |
9799 | ||
b34976b6 | 9800 | return TRUE; |
5bd4f169 AM |
9801 | } |
9802 | ||
65f38f15 AM |
9803 | /* Used to decide how to sort relocs in an optimal manner for the |
9804 | dynamic linker, before writing them out. */ | |
9805 | ||
9806 | static enum elf_reloc_type_class | |
4ce794b7 | 9807 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
65f38f15 | 9808 | { |
04c9666a | 9809 | enum elf_ppc64_reloc_type r_type; |
a33d1f77 | 9810 | |
4ce794b7 | 9811 | r_type = ELF64_R_TYPE (rela->r_info); |
a33d1f77 | 9812 | switch (r_type) |
65f38f15 AM |
9813 | { |
9814 | case R_PPC64_RELATIVE: | |
9815 | return reloc_class_relative; | |
9816 | case R_PPC64_JMP_SLOT: | |
9817 | return reloc_class_plt; | |
9818 | case R_PPC64_COPY: | |
9819 | return reloc_class_copy; | |
9820 | default: | |
9821 | return reloc_class_normal; | |
9822 | } | |
9823 | } | |
9824 | ||
5bd4f169 AM |
9825 | /* Finish up the dynamic sections. */ |
9826 | ||
b34976b6 | 9827 | static bfd_boolean |
4ce794b7 AM |
9828 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
9829 | struct bfd_link_info *info) | |
5bd4f169 | 9830 | { |
65f38f15 AM |
9831 | struct ppc_link_hash_table *htab; |
9832 | bfd *dynobj; | |
5bd4f169 | 9833 | asection *sdyn; |
5bd4f169 | 9834 | |
65f38f15 AM |
9835 | htab = ppc_hash_table (info); |
9836 | dynobj = htab->elf.dynobj; | |
5bd4f169 AM |
9837 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
9838 | ||
65f38f15 | 9839 | if (htab->elf.dynamic_sections_created) |
5bd4f169 | 9840 | { |
5bd4f169 AM |
9841 | Elf64_External_Dyn *dyncon, *dynconend; |
9842 | ||
4ce794b7 | 9843 | if (sdyn == NULL || htab->got == NULL) |
65f38f15 | 9844 | abort (); |
5bd4f169 AM |
9845 | |
9846 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
eea6121a | 9847 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
5bd4f169 AM |
9848 | for (; dyncon < dynconend; dyncon++) |
9849 | { | |
9850 | Elf_Internal_Dyn dyn; | |
19397422 | 9851 | asection *s; |
5bd4f169 AM |
9852 | |
9853 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
9854 | ||
9855 | switch (dyn.d_tag) | |
9856 | { | |
65f38f15 AM |
9857 | default: |
9858 | continue; | |
5bd4f169 | 9859 | |
5d1634d7 | 9860 | case DT_PPC64_GLINK: |
4ce794b7 | 9861 | s = htab->glink; |
6348e046 | 9862 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
ad8e1ba5 AM |
9863 | /* We stupidly defined DT_PPC64_GLINK to be the start |
9864 | of glink rather than the first entry point, which is | |
9865 | what ld.so needs, and now have a bigger stub to | |
9866 | support automatic multiple TOCs. */ | |
9867 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
5d1634d7 AM |
9868 | break; |
9869 | ||
19397422 AM |
9870 | case DT_PPC64_OPD: |
9871 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
9872 | if (s == NULL) |
9873 | continue; | |
9874 | dyn.d_un.d_ptr = s->vma; | |
19397422 AM |
9875 | break; |
9876 | ||
9877 | case DT_PPC64_OPDSZ: | |
9878 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
6348e046 AM |
9879 | if (s == NULL) |
9880 | continue; | |
eea6121a | 9881 | dyn.d_un.d_val = s->size; |
19397422 AM |
9882 | break; |
9883 | ||
65f38f15 | 9884 | case DT_PLTGOT: |
4ce794b7 | 9885 | s = htab->plt; |
6348e046 | 9886 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 AM |
9887 | break; |
9888 | ||
9889 | case DT_JMPREL: | |
4ce794b7 | 9890 | s = htab->relplt; |
6348e046 | 9891 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
65f38f15 | 9892 | break; |
5bd4f169 | 9893 | |
65f38f15 | 9894 | case DT_PLTRELSZ: |
eea6121a | 9895 | dyn.d_un.d_val = htab->relplt->size; |
5d1634d7 AM |
9896 | break; |
9897 | ||
9898 | case DT_RELASZ: | |
9899 | /* Don't count procedure linkage table relocs in the | |
9900 | overall reloc count. */ | |
4ce794b7 | 9901 | s = htab->relplt; |
6348e046 AM |
9902 | if (s == NULL) |
9903 | continue; | |
eea6121a | 9904 | dyn.d_un.d_val -= s->size; |
6348e046 AM |
9905 | break; |
9906 | ||
9907 | case DT_RELA: | |
9908 | /* We may not be using the standard ELF linker script. | |
9909 | If .rela.plt is the first .rela section, we adjust | |
9910 | DT_RELA to not include it. */ | |
4ce794b7 | 9911 | s = htab->relplt; |
6348e046 AM |
9912 | if (s == NULL) |
9913 | continue; | |
9914 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
9915 | continue; | |
eea6121a | 9916 | dyn.d_un.d_ptr += s->size; |
65f38f15 | 9917 | break; |
5bd4f169 | 9918 | } |
5bd4f169 | 9919 | |
65f38f15 | 9920 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
5bd4f169 | 9921 | } |
5bd4f169 AM |
9922 | } |
9923 | ||
eea6121a | 9924 | if (htab->got != NULL && htab->got->size != 0) |
5d1634d7 AM |
9925 | { |
9926 | /* Fill in the first entry in the global offset table. | |
9927 | We use it to hold the link-time TOCbase. */ | |
9928 | bfd_put_64 (output_bfd, | |
60ee0d4a | 9929 | elf_gp (output_bfd) + TOC_BASE_OFF, |
4ce794b7 | 9930 | htab->got->contents); |
5d1634d7 AM |
9931 | |
9932 | /* Set .got entry size. */ | |
4ce794b7 | 9933 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
5d1634d7 AM |
9934 | } |
9935 | ||
eea6121a | 9936 | if (htab->plt != NULL && htab->plt->size != 0) |
5d1634d7 AM |
9937 | { |
9938 | /* Set .plt entry size. */ | |
4ce794b7 | 9939 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
5d1634d7 AM |
9940 | = PLT_ENTRY_SIZE; |
9941 | } | |
9942 | ||
e717da7e AM |
9943 | /* We need to handle writing out multiple GOT sections ourselves, |
9944 | since we didn't add them to DYNOBJ. */ | |
9945 | while ((dynobj = dynobj->link_next) != NULL) | |
9946 | { | |
9947 | asection *s; | |
9948 | s = ppc64_elf_tdata (dynobj)->got; | |
9949 | if (s != NULL | |
eea6121a | 9950 | && s->size != 0 |
e717da7e AM |
9951 | && s->output_section != bfd_abs_section_ptr |
9952 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
9953 | s->contents, s->output_offset, | |
eea6121a | 9954 | s->size)) |
e717da7e AM |
9955 | return FALSE; |
9956 | s = ppc64_elf_tdata (dynobj)->relgot; | |
9957 | if (s != NULL | |
eea6121a | 9958 | && s->size != 0 |
e717da7e AM |
9959 | && s->output_section != bfd_abs_section_ptr |
9960 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
9961 | s->contents, s->output_offset, | |
eea6121a | 9962 | s->size)) |
e717da7e AM |
9963 | return FALSE; |
9964 | } | |
f6c52c13 | 9965 | |
b34976b6 | 9966 | return TRUE; |
5bd4f169 AM |
9967 | } |
9968 | ||
5bd4f169 | 9969 | #include "elf64-target.h" |